689140776948 has 96 divisors (see below), whose sum is σ = 1855815419136. Its totient is φ = 197342272512.

The previous prime is 689140776893. The next prime is 689140776967. The reversal of 689140776948 is 849677041986.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2462761 + ... + 2728272.

It is an arithmetic number, because the mean of its divisors is an integer number (19331410616).

Almost surely, 2^689140776948 is an apocalyptic number.

It is an amenable number.

689140776948 is an abundant number, since it is smaller than the sum of its proper divisors (1166674642188).

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

689140776948 is a wasteful number, since it uses less digits than its factorization.

689140776948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5191113 (or 5191111 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 69.

The spelling of 689140776948 in words is "six hundred eighty-nine billion, one hundred forty million, seven hundred seventy-six thousand, nine hundred forty-eight".