697949790 has 32 divisors (see below), whose sum is σ = 1773614880. Its totient is φ = 175171584.

The previous prime is 697949771. The next prime is 697949797. The reversal of 697949790 is 97949796.

It is a super-2 number, since 2×697949790² = 974267818722088200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697949797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683755 + ... + 684774.

It is an arithmetic number, because the mean of its divisors is an integer number (55425465).

Almost surely, 2^697949790 is an apocalyptic number.

697949790 is an abundant number, since it is smaller than the sum of its proper divisors (1075665090).

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

697949790 is a wasteful number, since it uses less digits than its factorization.

697949790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368556.

The product of its (nonzero) digits is 7715736, while the sum is 60.

The square root of 697949790 is about 26418.7393718928. The cubic root of 697949790 is about 887.0363018426.

The spelling of 697949790 in words is "six hundred ninety-seven million, nine hundred forty-nine thousand, seven hundred ninety".