666712462 has 16 divisors (see below), whose sum is σ = 1077516720. Its totient is φ = 307564992.

The previous prime is 666712457. The next prime is 666712469. The reversal of 666712462 is 264217666.

It is a super-2 number, since 2×666712462² = 889011013972202888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666712469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63589 + ... + 73327.

It is an arithmetic number, because the mean of its divisors is an integer number (67344795).

Almost surely, 2^666712462 is an apocalyptic number.

666712462 is a deficient number, since it is larger than the sum of its proper divisors (410804258).

666712462 is a wasteful number, since it uses less digits than its factorization.

666712462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12387.

The product of its digits is 145152, while the sum is 40.

The square root of 666712462 is about 25820.7757823037. The cubic root of 666712462 is about 873.6004672326.

The spelling of 666712462 in words is "six hundred sixty-six million, seven hundred twelve thousand, four hundred sixty-two".