40745566 has 8 divisors (see below), whose sum is σ = 64713600. Its totient is φ = 19174368.

The previous prime is 40745561. The next prime is 40745567. The reversal of 40745566 is 66554704.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40745566² = 3320402297320712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40745561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599166 + ... + 599233.

It is an arithmetic number, because the mean of its divisors is an integer number (8089200).

Almost surely, 2^40745566 is an apocalyptic number.

40745566 is a deficient number, since it is larger than the sum of its proper divisors (23968034).

40745566 is a wasteful number, since it uses less digits than its factorization.

40745566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198418.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 40745566 is about 6383.2253602705. The cubic root of 40745566 is about 344.1069558803.

The spelling of 40745566 in words is "forty million, seven hundred forty-five thousand, five hundred sixty-six".