667608494 has 16 divisors (see below), whose sum is σ = 1172386656. Its totient is φ = 279139200.

The previous prime is 667608463. The next prime is 667608523. The reversal of 667608494 is 494806766.

It is a super-2 number, since 2×667608494² = 891402202521896072, which contains 22 as substring.

It is a congruent number.

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, 580967 + ... + 582114.

It is an arithmetic number, because the mean of its divisors is an integer number (73274166).

Almost surely, 2^667608494 is an apocalyptic number.

667608494 is a deficient number, since it is larger than the sum of its proper divisors (504778162).

667608494 is a wasteful number, since it uses less digits than its factorization.

667608494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163131.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The square root of 667608494 is about 25838.1209456106. The cubic root of 667608494 is about 873.9916521431.

The spelling of 667608494 in words is "six hundred sixty-seven million, six hundred eight thousand, four hundred ninety-four".