690889792554 has 48 divisors (see below), whose sum is σ = 1649566350432. Its totient is φ = 207637716384.

The previous prime is 690889792519. The next prime is 690889792577. The reversal of 690889792554 is 455297988096.

690889792554 is a `hidden beast` number, since 69 + 0 + 8 + 8 + 9 + 7 + 9 + 2 + 554 = 666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 34321572 + ... + 34341695.

It is an arithmetic number, because the mean of its divisors is an integer number (34365965634).

Almost surely, 2^690889792554 is an apocalyptic number.

690889792554 is an abundant number, since it is smaller than the sum of its proper divisors (958676557878).

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

690889792554 is a wasteful number, since it uses less digits than its factorization.

690889792554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68663331 (or 68663328 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 72.

The spelling of 690889792554 in words is "six hundred ninety billion, eight hundred eighty-nine million, seven hundred ninety-two thousand, five hundred fifty-four".