66892490 has 16 divisors (see below), whose sum is σ = 137607552. Its totient is φ = 22934544.

The previous prime is 66892471. The next prime is 66892517. The reversal of 66892490 is 9429866.

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, 477734 + ... + 477873.

It is an arithmetic number, because the mean of its divisors is an integer number (8600472).

Almost surely, 2^66892490 is an apocalyptic number.

66892490 is an abundant number, since it is smaller than the sum of its proper divisors (70715062).

66892490 is a wasteful number, since it uses less digits than its factorization.

66892490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955621.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 66892490 is about 8178.7829167915. The cubic root of 66892490 is about 405.9374514367.

The spelling of 66892490 in words is "sixty-six million, eight hundred ninety-two thousand, four hundred ninety".