648953972 has 12 divisors (see below), whose sum is σ = 1146696096. Its totient is φ = 321326520.

The previous prime is 648953933. The next prime is 648954023. The reversal of 648953972 is 279359846.

It is a happy number.

It is a super-2 number, since 2×648953972² = 842282515549153568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787154 + ... + 787977.

It is an arithmetic number, because the mean of its divisors is an integer number (95558008).

Almost surely, 2^648953972 is an apocalyptic number.

It is an amenable number.

648953972 is a deficient number, since it is larger than the sum of its proper divisors (497742124).

648953972 is a wasteful number, since it uses less digits than its factorization.

648953972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575238 (or 1575236 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The square root of 648953972 is about 25474.5750111754. The cubic root of 648953972 is about 865.7741838774.

The spelling of 648953972 in words is "six hundred forty-eight million, nine hundred fifty-three thousand, nine hundred seventy-two".