68534972 has 12 divisors (see below), whose sum is σ = 130839576. Its totient is φ = 31152240.

The previous prime is 68534971. The next prime is 68534981. The reversal of 68534972 is 27943586.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 1557613 = 68534972 / (6 + 8 + 5 + 3 + 4 + 9 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68534971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778763 + ... + 778850.

It is an arithmetic number, because the mean of its divisors is an integer number (10903298).

Almost surely, 2^68534972 is an apocalyptic number.

It is an amenable number.

68534972 is a deficient number, since it is larger than the sum of its proper divisors (62304604).

68534972 is a wasteful number, since it uses less digits than its factorization.

68534972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557628 (or 1557626 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 68534972 is about 8278.5851448179. The cubic root of 68534972 is about 409.2330934601.

The spelling of 68534972 in words is "sixty-eight million, five hundred thirty-four thousand, nine hundred seventy-two".