681454832 has 10 divisors (see below), whose sum is σ = 1320318768. Its totient is φ = 340727408.

The previous prime is 681454831. The next prime is 681454849. The reversal of 681454832 is 238454186.

It is a super-2 number, since 2×681454832² = 928761376112296448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 681454832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681454831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21295448 + ... + 21295479.

Almost surely, 2^681454832 is an apocalyptic number.

It is an amenable number.

681454832 is a deficient number, since it is larger than the sum of its proper divisors (638863936).

681454832 is a wasteful number, since it uses less digits than its factorization.

681454832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42590935 (or 42590929 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 681454832 is about 26104.6898468455. The cubic root of 681454832 is about 879.9926101308.

It can be divided in two parts, 681454 and 832, that added together give a palindrome (682286).

The spelling of 681454832 in words is "six hundred eighty-one million, four hundred fifty-four thousand, eight hundred thirty-two".