681154002 has 32 divisors (see below), whose sum is σ = 1515264960. Its totient is φ = 226812960.

The previous prime is 681153973. The next prime is 681154027. The reversal of 681154002 is 200451186.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49677 + ... + 61887.

It is an arithmetic number, because the mean of its divisors is an integer number (47352030).

Almost surely, 2^681154002 is an apocalyptic number.

681154002 is an abundant number, since it is smaller than the sum of its proper divisors (834110958).

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

681154002 is a wasteful number, since it uses less digits than its factorization.

681154002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13255 (or 13249 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 681154002 is about 26098.9272193322. The cubic root of 681154002 is about 879.8630993992.

The spelling of 681154002 in words is "six hundred eighty-one million, one hundred fifty-four thousand, two".