670545500 has 48 divisors (see below), whose sum is σ = 1511747328. Its totient is φ = 259560000.

The previous prime is 670545481. The next prime is 670545509. The reversal of 670545500 is 5545076.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670545509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6131 + ... + 37130.

It is an arithmetic number, because the mean of its divisors is an integer number (31494736).

Almost surely, 2^670545500 is an apocalyptic number.

It is an amenable number.

670545500 is an abundant number, since it is smaller than the sum of its proper divisors (841201828).

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

670545500 is a wasteful number, since it uses less digits than its factorization.

670545500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43311 (or 43299 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 670545500 is about 25894.8933189538. The cubic root of 670545500 is about 875.2714259987.

The spelling of 670545500 in words is "six hundred seventy million, five hundred forty-five thousand, five hundred".