68431554 has 40 divisors (see below), whose sum is σ = 153888768. Its totient is φ = 22728600.

The previous prime is 68431553. The next prime is 68431567. The reversal of 68431554 is 45513486.

It is a happy number.

68431554 is a `hidden beast` number, since 68 + 43 + 1 + 554 = 666.

It is not an unprimeable number, because it can be changed into a prime (68431553) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 58879 + ... + 60029.

Almost surely, 2^68431554 is an apocalyptic number.

68431554 is an abundant number, since it is smaller than the sum of its proper divisors (85457214).

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

68431554 is a wasteful number, since it uses less digits than its factorization.

68431554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532 (or 1523 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 68431554 is about 8272.3366710984. The cubic root of 68431554 is about 409.0271481233.

The spelling of 68431554 in words is "sixty-eight million, four hundred thirty-one thousand, five hundred fifty-four".