648370974 has 8 divisors (see below), whose sum is σ = 1296741960. Its totient is φ = 216123656.

The previous prime is 648370937. The next prime is 648370999. The reversal of 648370974 is 479073846.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

648370974 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54030909 + ... + 54030920.

It is an arithmetic number, because the mean of its divisors is an integer number (162092745).

Almost surely, 2^648370974 is an apocalyptic number.

648370974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

648370974 is a wasteful number, since it uses less digits than its factorization.

648370974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108061834.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 648370974 is about 25463.1296976629. The cubic root of 648370974 is about 865.5148455867.

The spelling of 648370974 in words is "six hundred forty-eight million, three hundred seventy thousand, nine hundred seventy-four".