66760416 has 48 divisors (see below), whose sum is σ = 194720400. Its totient is φ = 22253184.

The previous prime is 66760409. The next prime is 66760439. The reversal of 66760416 is 61406766.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 37771 + ... + 39498.

It is an arithmetic number, because the mean of its divisors is an integer number (4056675).

Almost surely, 2^66760416 is an apocalyptic number.

It is an amenable number.

66760416 is an abundant number, since it is smaller than the sum of its proper divisors (127959984).

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

66760416 is a wasteful number, since it uses less digits than its factorization.

66760416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77288 (or 77274 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 66760416 is about 8170.7047431663. The cubic root of 66760416 is about 405.6701114750.

It can be divided in two parts, 66760 and 416, that added together give a palindrome (67176).

The spelling of 66760416 in words is "sixty-six million, seven hundred sixty thousand, four hundred sixteen".