40671656 has 8 divisors (see below), whose sum is σ = 76259370. Its totient is φ = 20335824.

The previous prime is 40671643. The next prime is 40671671. The reversal of 40671656 is 65617604.

It can be written as a sum of positive squares in only one way, i.e., 26728900 + 13942756 = 5170^2 + 3734^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2541971 + ... + 2541986.

Almost surely, 2^40671656 is an apocalyptic number.

It is an amenable number.

40671656 is a deficient number, since it is larger than the sum of its proper divisors (35587714).

40671656 is a wasteful number, since it uses less digits than its factorization.

40671656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083963 (or 5083959 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 40671656 is about 6377.4333395183. The cubic root of 40671656 is about 343.8987668586.

The spelling of 40671656 in words is "forty million, six hundred seventy-one thousand, six hundred fifty-six".