670982978 has 4 divisors (see below), whose sum is σ = 1006474470. Its totient is φ = 335491488.

The previous prime is 670982969. The next prime is 670982993. The reversal of 670982978 is 879289076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 660335809 + 10647169 = 25697^2 + 3263^2 .

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 as a sum of consecutive naturals, namely, 167745743 + ... + 167745746.

Almost surely, 2^670982978 is an apocalyptic number.

670982978 is a deficient number, since it is larger than the sum of its proper divisors (335491492).

670982978 is a wasteful number, since it uses less digits than its factorization.

670982978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335491491.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The square root of 670982978 is about 25903.3391283827. The cubic root of 670982978 is about 875.4617331192.

The spelling of 670982978 in words is "six hundred seventy million, nine hundred eighty-two thousand, nine hundred seventy-eight".