670905984 has 64 divisors (see below), whose sum is σ = 2036687040. Its totient is φ = 191686656.

The previous prime is 670905947. The next prime is 670905997. The reversal of 670905984 is 489509076.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×670905984³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 122109 + ... + 127484.

It is an arithmetic number, because the mean of its divisors is an integer number (31823235).

Almost surely, 2^670905984 is an apocalyptic number.

670905984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

670905984 is an abundant number, since it is smaller than the sum of its proper divisors (1365781056).

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

670905984 is a wasteful number, since it uses less digits than its factorization.

670905984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249617 (or 249605 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 670905984 is about 25901.8529066938. The cubic root of 670905984 is about 875.4282459910.

The spelling of 670905984 in words is "six hundred seventy million, nine hundred five thousand, nine hundred eighty-four".