73231668 has 48 divisors (see below), whose sum is σ = 190384320. Its totient is φ = 24343200.

The previous prime is 73231663. The next prime is 73231673. The reversal of 73231668 is 86613237.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (73231663) and next prime (73231673).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73231663) 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, 52338 + ... + 53718.

It is an arithmetic number, because the mean of its divisors is an integer number (3966340).

Almost surely, 2^73231668 is an apocalyptic number.

It is an amenable number.

73231668 is an abundant number, since it is smaller than the sum of its proper divisors (117152652).

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

73231668 is a wasteful number, since it uses less digits than its factorization.

73231668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885 (or 1877 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 73231668 is about 8557.5503504216. The cubic root of 73231668 is about 418.3755619803.

It can be divided in two parts, 732 and 31668, that added together give a square (32400 = 180²).

The spelling of 73231668 in words is "seventy-three million, two hundred thirty-one thousand, six hundred sixty-eight".