666700370 has 24 divisors (see below), whose sum is σ = 1395989964. Its totient is φ = 228582816.

The previous prime is 666700369. The next prime is 666700387. The reversal of 666700370 is 73007666.

666700370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 547606801 + 119093569 = 23401^2 + 10913^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 666700370.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 679817 + ... + 680796.

Almost surely, 2^666700370 is an apocalyptic number.

666700370 is an abundant number, since it is smaller than the sum of its proper divisors (729289594).

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

666700370 is a wasteful number, since it uses less digits than its factorization.

666700370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360634 (or 1360627 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 666700370 is about 25820.5416287110. The cubic root of 666700370 is about 873.5951857750.

The spelling of 666700370 in words is "six hundred sixty-six million, seven hundred thousand, three hundred seventy".