40745663 has 16 divisors (see below), whose sum is σ = 47837184. Its totient is φ = 33981120.

The previous prime is 40745657. The next prime is 40745669. The reversal of 40745663 is 36654704.

It is an interprime number because it is at equal distance from previous prime (40745657) and next prime (40745669).

It is a cyclic number.

It is not a de Polignac number, because 40745663 - 2⁴ = 40745647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40745669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88931 + ... + 89387.

It is an arithmetic number, because the mean of its divisors is an integer number (2989824).

Almost surely, 2^40745663 is an apocalyptic number.

40745663 is a deficient number, since it is larger than the sum of its proper divisors (7091521).

40745663 is a wasteful number, since it uses less digits than its factorization.

40745663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 40745663 is about 6383.2329583057. The cubic root of 40745663 is about 344.1072289435.

The spelling of 40745663 in words is "forty million, seven hundred forty-five thousand, six hundred sixty-three".