690085024591 has 4 divisors (see below), whose sum is σ = 701781381000. Its totient is φ = 678388668184.

The previous prime is 690085024547. The next prime is 690085024609. The reversal of 690085024591 is 195420580096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 690085024591 - 2²⁷ = 689950806863 is a prime.

It is a super-2 number, since 2×690085024591² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690085024511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5848178116 + ... + 5848178233.

It is an arithmetic number, because the mean of its divisors is an integer number (175445345250).

Almost surely, 2^690085024591 is an apocalyptic number.

690085024591 is a deficient number, since it is larger than the sum of its proper divisors (11696356409).

690085024591 is a wasteful number, since it uses less digits than its factorization.

690085024591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11696356408.

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 690085024591 in words is "six hundred ninety billion, eighty-five million, twenty-four thousand, five hundred ninety-one".