690256654997 has 16 divisors (see below), whose sum is σ = 852776897280. Its totient is φ = 544060547712.

The previous prime is 690256654981. The next prime is 690256655047. The reversal of 690256654997 is 799456652096.

It is a cyclic number.

It is not a de Polignac number, because 690256654997 - 2⁴ = 690256654981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690256654957) 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, 14396672 + ... + 14444537.

It is an arithmetic number, because the mean of its divisors is an integer number (53298556080).

Almost surely, 2^690256654997 is an apocalyptic number.

It is an amenable number.

690256654997 is a deficient number, since it is larger than the sum of its proper divisors (162520242283).

690256654997 is a wasteful number, since it uses less digits than its factorization.

690256654997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28841492.

The product of its (nonzero) digits is 220449600, while the sum is 68.

The spelling of 690256654997 in words is "six hundred ninety billion, two hundred fifty-six million, six hundred fifty-four thousand, nine hundred ninety-seven".