73665534 has 16 divisors (see below), whose sum is σ = 147626640. Its totient is φ = 24505920.

The previous prime is 73665533. The next prime is 73665551. The reversal of 73665534 is 43556637.

It is a super-2 number, since 2×73665534² = 10853221799010312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73665492 and 73665501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73665533) 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, 9007 + ... + 15114.

It is an arithmetic number, because the mean of its divisors is an integer number (9226665).

Almost surely, 2^73665534 is an apocalyptic number.

73665534 is an abundant number, since it is smaller than the sum of its proper divisors (73961106).

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

73665534 is a wasteful number, since it uses less digits than its factorization.

73665534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24635.

The product of its digits is 226800, while the sum is 39.

The square root of 73665534 is about 8582.8628091098. The cubic root of 73665534 is about 419.2001671364.

The spelling of 73665534 in words is "seventy-three million, six hundred sixty-five thousand, five hundred thirty-four".