690498678 has 32 divisors (see below), whose sum is σ = 1402329600. Its totient is φ = 226622016.

The previous prime is 690498659. The next prime is 690498733. The reversal of 690498678 is 876894096.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366543 + ... + 368421.

It is an arithmetic number, because the mean of its divisors is an integer number (43822800).

Almost surely, 2^690498678 is an apocalyptic number.

690498678 is an abundant number, since it is smaller than the sum of its proper divisors (711830922).

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

690498678 is a wasteful number, since it uses less digits than its factorization.

690498678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The square root of 690498678 is about 26277.3415322022. The cubic root of 690498678 is about 883.8684200123.

The spelling of 690498678 in words is "six hundred ninety million, four hundred ninety-eight thousand, six hundred seventy-eight".