648736954 has 4 divisors (see below), whose sum is σ = 973105434. Its totient is φ = 324368476.

The previous prime is 648736939. The next prime is 648736961. The reversal of 648736954 is 459637846.

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., 548636929 + 100100025 = 23423^2 + 10005^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162184237 + ... + 162184240.

Almost surely, 2^648736954 is an apocalyptic number.

648736954 is a deficient number, since it is larger than the sum of its proper divisors (324368480).

648736954 is a wasteful number, since it uses less digits than its factorization.

648736954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324368479.

The product of its digits is 4354560, while the sum is 52.

The square root of 648736954 is about 25470.3151531346. The cubic root of 648736954 is about 865.6776646902.

The spelling of 648736954 in words is "six hundred forty-eight million, seven hundred thirty-six thousand, nine hundred fifty-four".