688472454 has 16 divisors (see below), whose sum is σ = 1389814848. Its totient is φ = 227345832.

The previous prime is 688472453. The next prime is 688472513. The reversal of 688472454 is 454274886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688472453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535552 + ... + 536835.

It is an arithmetic number, because the mean of its divisors is an integer number (86863428).

Almost surely, 2^688472454 is an apocalyptic number.

688472454 is an abundant number, since it is smaller than the sum of its proper divisors (701342394).

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

688472454 is a wasteful number, since it uses less digits than its factorization.

688472454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072499.

The product of its digits is 1720320, while the sum is 48.

The square root of 688472454 is about 26238.7586215507. The cubic root of 688472454 is about 883.0030212798.

The spelling of 688472454 in words is "six hundred eighty-eight million, four hundred seventy-two thousand, four hundred fifty-four".