73644669 has 24 divisors (see below), whose sum is σ = 123119360. Its totient is φ = 41547168.

The previous prime is 73644661. The next prime is 73644673. The reversal of 73644669 is 96644637.

It is not a de Polignac number, because 73644669 - 2³ = 73644661 is a prime.

It is a super-2 number, since 2×73644669² = 10847074544239122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73644661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2422 + ... + 12375.

Almost surely, 2^73644669 is an apocalyptic number.

73644669 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

73644669 is a deficient number, since it is larger than the sum of its proper divisors (49474691).

73644669 is a wasteful number, since it uses less digits than its factorization.

73644669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14889 (or 14886 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 73644669 is about 8581.6472195028. The cubic root of 73644669 is about 419.1605853631.

The spelling of 73644669 in words is "seventy-three million, six hundred forty-four thousand, six hundred sixty-nine".