670521700 has 36 divisors (see below), whose sum is σ = 1463781312. Its totient is φ = 266596000.

The previous prime is 670521689. The next prime is 670521707. The reversal of 670521700 is 7125076.

It is not an unprimeable number, because it can be changed into a prime (670521707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3376 + ... + 36775.

It is an arithmetic number, because the mean of its divisors is an integer number (40660592).

Almost surely, 2^670521700 is an apocalyptic number.

It is an amenable number.

670521700 is an abundant number, since it is smaller than the sum of its proper divisors (793259612).

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

670521700 is a wasteful number, since it uses less digits than its factorization.

670521700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40332 (or 40325 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 670521700 is about 25894.4337648074. The cubic root of 670521700 is about 875.2610703970.

Adding to 670521700 its reverse (7125076), we get a palindrome (677646776).

The spelling of 670521700 in words is "six hundred seventy million, five hundred twenty-one thousand, seven hundred".