688361434 has 16 divisors (see below), whose sum is σ = 1079112960. Its totient is φ = 328703760.

The previous prime is 688361419. The next prime is 688361441. The reversal of 688361434 is 434163886.

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, 19087 + ... + 41725.

It is an arithmetic number, because the mean of its divisors is an integer number (67444560).

Almost surely, 2^688361434 is an apocalyptic number.

688361434 is a deficient number, since it is larger than the sum of its proper divisors (390751526).

688361434 is a wasteful number, since it uses less digits than its factorization.

688361434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23325.

The product of its digits is 331776, while the sum is 43.

The square root of 688361434 is about 26236.6429636110. The cubic root of 688361434 is about 882.9555556842.

The spelling of 688361434 in words is "six hundred eighty-eight million, three hundred sixty-one thousand, four hundred thirty-four".