690726976265 has 4 divisors (see below), whose sum is σ = 828872371524. Its totient is φ = 552581581008.

The previous prime is 690726976259. The next prime is 690726976267. The reversal of 690726976265 is 562679627096.

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

It can be written as a sum of positive squares in 2 ways, for example, as 113471964736 + 577255011529 = 336856^2 + 759773^2 .

It is a cyclic number.

It is not a de Polignac number, because 690726976265 - 2¹⁰ = 690726975241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690726976267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69072697622 + ... + 69072697631.

It is an arithmetic number, because the mean of its divisors is an integer number (207218092881).

Almost surely, 2^690726976265 is an apocalyptic number.

It is an amenable number.

690726976265 is a deficient number, since it is larger than the sum of its proper divisors (138145395259).

690726976265 is a wasteful number, since it uses less digits than its factorization.

690726976265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138145395258.

The product of its (nonzero) digits is 102876480, while the sum is 65.

The spelling of 690726976265 in words is "six hundred ninety billion, seven hundred twenty-six million, nine hundred seventy-six thousand, two hundred sixty-five".