697540830 has 32 divisors (see below), whose sum is σ = 1913255424. Its totient is φ = 159437856.

The previous prime is 697540829. The next prime is 697540841. The reversal of 697540830 is 38045796.

It is a happy number.

697540830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1660602 + ... + 1661021.

It is an arithmetic number, because the mean of its divisors is an integer number (59789232).

Almost surely, 2^697540830 is an apocalyptic number.

697540830 is an abundant number, since it is smaller than the sum of its proper divisors (1215714594).

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

697540830 is a wasteful number, since it uses less digits than its factorization.

697540830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321640.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 697540830 is about 26410.9982772329. The cubic root of 697540830 is about 886.8630165781.

The spelling of 697540830 in words is "six hundred ninety-seven million, five hundred forty thousand, eight hundred thirty".