697430916 has 216 divisors, whose sum is σ = 2339751960. Its totient is φ = 173021184.

The previous prime is 697430897. The next prime is 697430927. The reversal of 697430916 is 619034796.

It can be written as a sum of positive squares in 4 ways, for example, as 235008900 + 462422016 = 15330^2 + 21504^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 388950 + ... + 390738.

It is an arithmetic number, because the mean of its divisors is an integer number (10832185).

Almost surely, 2^697430916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697430916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169875980).

697430916 is an abundant number, since it is smaller than the sum of its proper divisors (1642321044).

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

697430916 is a wasteful number, since it uses less digits than its factorization.

697430916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843 (or 1831 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 697430916 is about 26408.9173575897. The cubic root of 697430916 is about 886.8164320734.

The spelling of 697430916 in words is "six hundred ninety-seven million, four hundred thirty thousand, nine hundred sixteen".