66497632 has 12 divisors (see below), whose sum is σ = 130917276. Its totient is φ = 33248800.

The previous prime is 66497617. The next prime is 66497633. The reversal of 66497632 is 23679466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66497633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038994 + ... + 1039057.

It is an arithmetic number, because the mean of its divisors is an integer number (10909773).

Almost surely, 2^66497632 is an apocalyptic number.

It is an amenable number.

66497632 is a deficient number, since it is larger than the sum of its proper divisors (64419644).

66497632 is a wasteful number, since it uses less digits than its factorization.

66497632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078061 (or 2078053 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 66497632 is about 8154.6080224619. The cubic root of 66497632 is about 405.1371419922.

The spelling of 66497632 in words is "sixty-six million, four hundred ninety-seven thousand, six hundred thirty-two".