670965408 has 72 divisors (see below), whose sum is σ = 1910563200. Its totient is φ = 223361664.

The previous prime is 670965391. The next prime is 670965433. The reversal of 670965408 is 804569076.

It is a Cunningham number, because it is equal to 25903²-1.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 413623 + ... + 415241.

It is an arithmetic number, because the mean of its divisors is an integer number (26535600).

Almost surely, 2^670965408 is an apocalyptic number.

It is an amenable number.

670965408 is an abundant number, since it is smaller than the sum of its proper divisors (1239597792).

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

670965408 is a wasteful number, since it uses less digits than its factorization.

670965408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074 (or 3063 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 670965408 is about 25902.9999806972. Note that the first 4 decimals coincide. The cubic root of 670965408 is about 875.4540915955.

The spelling of 670965408 in words is "six hundred seventy million, nine hundred sixty-five thousand, four hundred eight".