670885290 has 24 divisors (see below), whose sum is σ = 1744301988. Its totient is φ = 178902720.

The previous prime is 670885279. The next prime is 670885309. The reversal of 670885290 is 92588076.

It can be written as a sum of positive squares in 2 ways, for example, as 645210801 + 25674489 = 25401^2 + 5067^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3727051 + ... + 3727230.

Almost surely, 2^670885290 is an apocalyptic number.

670885290 is an abundant number, since it is smaller than the sum of its proper divisors (1073416698).

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

670885290 is a wasteful number, since it uses less digits than its factorization.

670885290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7454294 (or 7454291 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 670885290 is about 25901.4534341222. The cubic root of 670885290 is about 875.4192450784.

The spelling of 670885290 in words is "six hundred seventy million, eight hundred eighty-five thousand, two hundred ninety".