670369520 has 40 divisors (see below), whose sum is σ = 1564453440. Its totient is φ = 267142400.

The previous prime is 670369489. The next prime is 670369529. The reversal of 670369520 is 25963076.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670369529) 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, 5945 + ... + 37095.

It is an arithmetic number, because the mean of its divisors is an integer number (39111336).

Almost surely, 2^670369520 is an apocalyptic number.

It is an amenable number.

670369520 is an abundant number, since it is smaller than the sum of its proper divisors (894083920).

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

670369520 is a wasteful number, since it uses less digits than its factorization.

670369520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31433 (or 31427 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 670369520 is about 25891.4951287097. The cubic root of 670369520 is about 875.1948496678.

The spelling of 670369520 in words is "six hundred seventy million, three hundred sixty-nine thousand, five hundred twenty".