666701010 has 64 divisors (see below), whose sum is σ = 1839196800. Its totient is φ = 171654336.

The previous prime is 666700967. The next prime is 666701027. The reversal of 666701010 is 10107666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34744 + ... + 50403.

It is an arithmetic number, because the mean of its divisors is an integer number (28737450).

Almost surely, 2^666701010 is an apocalyptic number.

666701010 is an abundant number, since it is smaller than the sum of its proper divisors (1172495790).

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

666701010 is a wasteful number, since it uses less digits than its factorization.

666701010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85192 (or 85186 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 666701010 is about 25820.5540219415. The cubic root of 666701010 is about 873.5954653113.

Adding to 666701010 its reverse (10107666), we get a palindrome (676808676).

It can be divided in two parts, 66 and 6701010, that added together give a palindrome (6701076).

The spelling of 666701010 in words is "six hundred sixty-six million, seven hundred one thousand, ten".