73689633 has 12 divisors (see below), whose sum is σ = 106554708. Its totient is φ = 49073760.

The previous prime is 73689613. The next prime is 73689653. The reversal of 73689633 is 33698637.

It is a happy number.

73689633 is a `hidden beast` number, since 7 + 3 + 6 + 8 + 9 + 633 = 666.

It is an interprime number because it is at equal distance from previous prime (73689613) and next prime (73689653).

It can be written as a sum of positive squares in 2 ways, for example, as 42419169 + 31270464 = 6513^2 + 5592^2 .

It is not a de Polignac number, because 73689633 - 2⁵ = 73689601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73689613) 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, 5691 + ... + 13407.

It is an arithmetic number, because the mean of its divisors is an integer number (8879559).

Almost surely, 2^73689633 is an apocalyptic number.

It is an amenable number.

73689633 is a deficient number, since it is larger than the sum of its proper divisors (32865075).

73689633 is a wasteful number, since it uses less digits than its factorization.

73689633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8784 (or 8781 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 73689633 is about 8584.2665965125. The cubic root of 73689633 is about 419.2458746419.

The spelling of 73689633 in words is "seventy-three million, six hundred eighty-nine thousand, six hundred thirty-three".