66360416 has 24 divisors (see below), whose sum is σ = 132000120. Its totient is φ = 32836608.

The previous prime is 66360403. The next prime is 66360443. The reversal of 66360416 is 61406366.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 7586 + ... + 13793.

It is an arithmetic number, because the mean of its divisors is an integer number (5500005).

Almost surely, 2^66360416 is an apocalyptic number.

It is an amenable number.

66360416 is a deficient number, since it is larger than the sum of its proper divisors (65639704).

66360416 is a wasteful number, since it uses less digits than its factorization.

66360416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21486 (or 21478 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66360416 is about 8146.1902752145. The cubic root of 66360416 is about 404.8582870549.

The spelling of 66360416 in words is "sixty-six million, three hundred sixty thousand, four hundred sixteen".