66413370 has 32 divisors (see below), whose sum is σ = 160947072. Its totient is φ = 17537472.

The previous prime is 66413359. The next prime is 66413387. The reversal of 66413370 is 7331466.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7657 + ... + 13836.

It is an arithmetic number, because the mean of its divisors is an integer number (5029596).

Almost surely, 2^66413370 is an apocalyptic number.

66413370 is an abundant number, since it is smaller than the sum of its proper divisors (94533702).

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

66413370 is a wasteful number, since it uses less digits than its factorization.

66413370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21606.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 66413370 is about 8149.4398580516. The cubic root of 66413370 is about 404.9659474494.

It can be divided in two parts, 6641 and 3370, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 66413370 in words is "sixty-six million, four hundred thirteen thousand, three hundred seventy".