73661982 has 32 divisors (see below), whose sum is σ = 149804160. Its totient is φ = 24144480.

The previous prime is 73661963. The next prime is 73661989. The reversal of 73661982 is 28916637.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73661989) 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, 106257 + ... + 106947.

It is an arithmetic number, because the mean of its divisors is an integer number (4681380).

Almost surely, 2^73661982 is an apocalyptic number.

73661982 is an abundant number, since it is smaller than the sum of its proper divisors (76142178).

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

73661982 is a wasteful number, since it uses less digits than its factorization.

73661982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968.

The product of its digits is 108864, while the sum is 42.

The square root of 73661982 is about 8582.6558826508. The cubic root of 73661982 is about 419.1934293725.

The spelling of 73661982 in words is "seventy-three million, six hundred sixty-one thousand, nine hundred eighty-two".