73668940 has 24 divisors (see below), whose sum is σ = 157626000. Its totient is φ = 28911168.

The previous prime is 73668937. The next prime is 73668941. The reversal of 73668940 is 4986637.

It is a happy number.

It is a super-2 number, since 2×73668940² = 10854225441447200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73668941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33690 + ... + 35809.

It is an arithmetic number, because the mean of its divisors is an integer number (6567750).

Almost surely, 2^73668940 is an apocalyptic number.

It is an amenable number.

73668940 is an abundant number, since it is smaller than the sum of its proper divisors (83957060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73668940 is a wasteful number, since it uses less digits than its factorization.

73668940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69561 (or 69559 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 73668940 is about 8583.0612254603. The cubic root of 73668940 is about 419.2066277505.

The spelling of 73668940 in words is "seventy-three million, six hundred sixty-eight thousand, nine hundred forty".