66351044 has 12 divisors (see below), whose sum is σ = 121162944. Its totient is φ = 31733064.

The previous prime is 66351029. The next prime is 66351049. The reversal of 66351044 is 44015366.

It is a happy number.

It is a super-2 number, since 2×66351044² = 8804922079779872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66350998 and 66351016.

It is not an unprimeable number, because it can be changed into a prime (66351049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360512 + ... + 360695.

It is an arithmetic number, because the mean of its divisors is an integer number (10096912).

Almost surely, 2^66351044 is an apocalyptic number.

It is an amenable number.

66351044 is a deficient number, since it is larger than the sum of its proper divisors (54811900).

66351044 is a wasteful number, since it uses less digits than its factorization.

66351044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721234 (or 721232 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 66351044 is about 8145.6150166823. The cubic root of 66351044 is about 404.8392269448.

The spelling of 66351044 in words is "sixty-six million, three hundred fifty-one thousand, forty-four".