66451024 has 20 divisors (see below), whose sum is σ = 130514836. Its totient is φ = 32769792.

The previous prime is 66451019. The next prime is 66451027. The reversal of 66451024 is 42015466.

It can be written as a sum of positive squares in 2 ways, for example, as 22467600 + 43983424 = 4740^2 + 6632^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66450983 and 66451001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66451027) 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, 27279 + ... + 29614.

Almost surely, 2^66451024 is an apocalyptic number.

It is an amenable number.

66451024 is a deficient number, since it is larger than the sum of its proper divisors (64063812).

66451024 is a wasteful number, since it uses less digits than its factorization.

66451024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56974 (or 56968 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 66451024 is about 8151.7497508204. The cubic root of 66451024 is about 405.0424667150.

The spelling of 66451024 in words is "sixty-six million, four hundred fifty-one thousand, twenty-four".