681006054 has 16 divisors (see below), whose sum is σ = 1362309120. Its totient is φ = 226952520.

The previous prime is 681006041. The next prime is 681006071. The reversal of 681006054 is 450600186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27139 + ... + 45809.

It is an arithmetic number, because the mean of its divisors is an integer number (85144320).

Almost surely, 2^681006054 is an apocalyptic number.

681006054 is an abundant number, since it is smaller than the sum of its proper divisors (681303066).

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

681006054 is a wasteful number, since it uses less digits than its factorization.

681006054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24755.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 681006054 is about 26096.0926960340. The cubic root of 681006054 is about 879.7993921166.

The spelling of 681006054 in words is "six hundred eighty-one million, six thousand, fifty-four".