690574913 has 16 divisors (see below), whose sum is σ = 799868160. Its totient is φ = 583981056.

The previous prime is 690574909. The next prime is 690574939. The reversal of 690574913 is 319475096.

It is a cyclic number.

It is not a de Polignac number, because 690574913 - 2² = 690574909 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (690574903) 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, 242345 + ... + 245177.

It is an arithmetic number, because the mean of its divisors is an integer number (49991760).

Almost surely, 2^690574913 is an apocalyptic number.

It is an amenable number.

690574913 is a deficient number, since it is larger than the sum of its proper divisors (109293247).

690574913 is a wasteful number, since it uses less digits than its factorization.

690574913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 690574913 is about 26278.7920765015. The cubic root of 690574913 is about 883.9009468568.

It can be divided in two parts, 6905 and 74913, that added together give a palindrome (81818).

The spelling of 690574913 in words is "six hundred ninety million, five hundred seventy-four thousand, nine hundred thirteen".