66671492 has 12 divisors (see below), whose sum is σ = 116828880. Its totient is φ = 33291816.

The previous prime is 66671477. The next prime is 66671519. The reversal of 66671492 is 29417666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7442 + ... + 13737.

It is an arithmetic number, because the mean of its divisors is an integer number (9735740).

Almost surely, 2^66671492 is an apocalyptic number.

It is an amenable number.

66671492 is a deficient number, since it is larger than the sum of its proper divisors (50157388).

66671492 is a wasteful number, since it uses less digits than its factorization.

66671492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21970 (or 21968 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 66671492 is about 8165.2612940432. The cubic root of 66671492 is about 405.4899156862.

The spelling of 66671492 in words is "sixty-six million, six hundred seventy-one thousand, four hundred ninety-two".