694804680 has 96 divisors (see below), whose sum is σ = 2264216760. Its totient is φ = 184780800.

The previous prime is 694804657. The next prime is 694804699. The reversal of 694804680 is 86408496.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 694744164 + 60516 = 26358^2 + 246^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141954 + ... + 146766.

Almost surely, 2^694804680 is an apocalyptic number.

694804680 is a gapful number since it is divisible by the number (60) 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 694804680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132108380).

694804680 is an abundant number, since it is smaller than the sum of its proper divisors (1569412080).

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

694804680 is a wasteful number, since it uses less digits than its factorization.

694804680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231 (or 5224 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 694804680 is about 26359.1479376705. The cubic root of 694804680 is about 885.7019041429.

The spelling of 694804680 in words is "six hundred ninety-four million, eight hundred four thousand, six hundred eighty".