670511280 has 80 divisors (see below), whose sum is σ = 2200868064. Its totient is φ = 168284160.

The previous prime is 670511279. The next prime is 670511287. The reversal of 670511280 is 82115076.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (670511287) 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, 78091 + ... + 86250.

Almost surely, 2^670511280 is an apocalyptic number.

670511280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

670511280 is an abundant number, since it is smaller than the sum of its proper divisors (1530356784).

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

670511280 is a wasteful number, since it uses less digits than its factorization.

670511280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164374 (or 164368 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 670511280 is about 25894.2325624839. The cubic root of 670511280 is about 875.2565364808.

The spelling of 670511280 in words is "six hundred seventy million, five hundred eleven thousand, two hundred eighty".