670264820 has 24 divisors (see below), whose sum is σ = 1456093800. Its totient is φ = 258860672.

The previous prime is 670264807. The next prime is 670264867. The reversal of 670264820 is 28462076.

It can be written as a sum of positive squares in 4 ways, for example, as 294602896 + 375661924 = 17164^2 + 19382^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577235 + ... + 578394.

It is an arithmetic number, because the mean of its divisors is an integer number (60670575).

Almost surely, 2^670264820 is an apocalyptic number.

It is an amenable number.

670264820 is an abundant number, since it is smaller than the sum of its proper divisors (785828980).

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

670264820 is a wasteful number, since it uses less digits than its factorization.

670264820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155667 (or 1155665 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 670264820 is about 25889.4731502980. The cubic root of 670264820 is about 875.1492839169.

The spelling of 670264820 in words is "six hundred seventy million, two hundred sixty-four thousand, eight hundred twenty".