70100 has 18 divisors (see below), whose sum is σ = 152334. Its totient is φ = 28000.

The previous prime is 70099. The next prime is 70111. The reversal of 70100 is 107.

It can be written as a sum of positive squares in 3 ways, for example, as 13456 + 56644 = 116^2 + 238^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251 + ... + 450.

It is an arithmetic number, because the mean of its divisors is an integer number (8463).

2⁷⁰¹⁰⁰ is an apocalyptic number.

It is an amenable number.

70100 is an abundant number, since it is smaller than the sum of its proper divisors (82234).

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

70100 is a wasteful number, since it uses less digits than its factorization.

70100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 7, while the sum is 8.

The square root of 70100 is about 264.7640458975. The cubic root of 70100 is about 41.2324688283.

Adding to 70100 its reverse (107), we get a palindrome (70207).

The spelling of 70100 in words is "seventy thousand, one hundred", and thus it is an iban number.