66962616 has 48 divisors (see below), whose sum is σ = 194741640. Its totient is φ = 19131840.

The previous prime is 66962549. The next prime is 66962617. The reversal of 66962616 is 61626966.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66962617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27295 + ... + 29646.

Almost surely, 2^66962616 is an apocalyptic number.

It is an amenable number.

66962616 is an abundant number, since it is smaller than the sum of its proper divisors (127779024).

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

66962616 is a wasteful number, since it uses less digits than its factorization.

66962616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56964 (or 56953 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 66962616 is about 8183.0688619857. The cubic root of 66962616 is about 406.0792552371.

The spelling of 66962616 in words is "sixty-six million, nine hundred sixty-two thousand, six hundred sixteen".