331772648 has 8 divisors (see below), whose sum is σ = 622073730. Its totient is φ = 165886320.

The previous prime is 331772621. The next prime is 331772657. The reversal of 331772648 is 846277133.

It can be written as a sum of positive squares in only one way, i.e., 324792484 + 6980164 = 18022^2 + 2642^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×331772648² = 220146179921863808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20735783 + ... + 20735798.

Almost surely, 2^331772648 is an apocalyptic number.

It is an amenable number.

331772648 is a deficient number, since it is larger than the sum of its proper divisors (290301082).

331772648 is a wasteful number, since it uses less digits than its factorization.

331772648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41471587 (or 41471583 counting only the distinct ones).

The product of its digits is 169344, while the sum is 41.

The square root of 331772648 is about 18214.6273088416. The cubic root of 331772648 is about 692.2774623255.

The spelling of 331772648 in words is "three hundred thirty-one million, seven hundred seventy-two thousand, six hundred forty-eight".