40651066 has 4 divisors (see below), whose sum is σ = 60976602. Its totient is φ = 20325532.

The previous prime is 40651057. The next prime is 40651073. The reversal of 40651066 is 66015604.

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., 34751025 + 5900041 = 5895^2 + 2429^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10162765 + ... + 10162768.

Almost surely, 2^40651066 is an apocalyptic number.

40651066 is a deficient number, since it is larger than the sum of its proper divisors (20325536).

40651066 is a wasteful number, since it uses less digits than its factorization.

40651066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20325535.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 40651066 is about 6375.8188493714. The cubic root of 40651066 is about 343.8407242188.

The spelling of 40651066 in words is "forty million, six hundred fifty-one thousand, sixty-six".