66724116 has 24 divisors (see below), whose sum is σ = 164848320. Its totient is φ = 20932992.

The previous prime is 66724109. The next prime is 66724123. The reversal of 66724116 is 61142766.

It is an interprime number because it is at equal distance from previous prime (66724109) and next prime (66724123).

It is a congruent number.

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, 163336 + ... + 163743.

It is an arithmetic number, because the mean of its divisors is an integer number (6868680).

Almost surely, 2^66724116 is an apocalyptic number.

It is an amenable number.

66724116 is an abundant number, since it is smaller than the sum of its proper divisors (98124204).

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

66724116 is a wasteful number, since it uses less digits than its factorization.

66724116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327103 (or 327101 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 66724116 is about 8168.4830905132. The cubic root of 66724116 is about 405.5965724144.

The spelling of 66724116 in words is "sixty-six million, seven hundred twenty-four thousand, one hundred sixteen".