40645516 has 6 divisors (see below), whose sum is σ = 71129660. Its totient is φ = 20322756.

The previous prime is 40645481. The next prime is 40645519. The reversal of 40645516 is 61554604.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (40645519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080686 + ... + 5080693.

Almost surely, 2^40645516 is an apocalyptic number.

It is an amenable number.

40645516 is a deficient number, since it is larger than the sum of its proper divisors (30484144).

40645516 is a wasteful number, since it uses less digits than its factorization.

40645516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10161383 (or 10161381 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 40645516 is about 6375.3835963023. The cubic root of 40645516 is about 343.8250755691.

The spelling of 40645516 in words is "forty million, six hundred forty-five thousand, five hundred sixteen".