73609740 has 36 divisors (see below), whose sum is σ = 223283424. Its totient is φ = 19629216.

The previous prime is 73609727. The next prime is 73609741. The reversal of 73609740 is 4790637.

73609740 is a `hidden beast` number, since 7 + 3 + 609 + 7 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 73609695 and 73609704.

It is not an unprimeable number, because it can be changed into a prime (73609741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204292 + ... + 204651.

Almost surely, 2^73609740 is an apocalyptic number.

It is an amenable number.

73609740 is an abundant number, since it is smaller than the sum of its proper divisors (149673684).

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

73609740 is a wasteful number, since it uses less digits than its factorization.

73609740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408958 (or 408953 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 73609740 is about 8579.6118793335. The cubic root of 73609740 is about 419.0943068595.

The spelling of 73609740 in words is "seventy-three million, six hundred nine thousand, seven hundred forty".