666452010 has 64 divisors (see below), whose sum is σ = 1866903552. Its totient is φ = 149088576.

The previous prime is 666451993. The next prime is 666452021. The reversal of 666452010 is 10254666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23892 + ... + 43631.

It is an arithmetic number, because the mean of its divisors is an integer number (29170368).

Almost surely, 2^666452010 is an apocalyptic number.

666452010 is an abundant number, since it is smaller than the sum of its proper divisors (1200451542).

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

666452010 is a wasteful number, since it uses less digits than its factorization.

666452010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67587.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 666452010 is about 25815.7318315790. The cubic root of 666452010 is about 873.4866947361.

It can be divided in two parts, 666 and 452010, that added together give a triangular number (452676 = T₉₅₁).

The spelling of 666452010 in words is "six hundred sixty-six million, four hundred fifty-two thousand, ten".