• 700 can be written using four 4's:

700 has 18 divisors (see below), whose sum is σ = 1736. Its totient is φ = 240.

The previous prime is 691. The next prime is 701. The reversal of 700 is 7.

It is a happy number.

700 is nontrivially palindromic in base 12.

It is a sliding number, since 700 = 200 + 500 and 1/200 + 1/500 = 0.00700.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

700 is an undulating number in base 7 and base 12.

It is a plaindrome in base 16.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97 + ... + 103.

2^{700} is an apocalyptic number.

700 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868).

700 is an abundant number, since it is smaller than the sum of its proper divisors (1036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

700 is a wasteful number, since it uses less digits than its factorization.

700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 7, while the sum is 7.

The square root of 700 is about 26.4575131106. The cubic root of 700 is about 8.8790400174.

The spelling of 700 in words is "seven hundred", and thus it is an aban number, an iban number, and an oban number.

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