73965631 has 16 divisors (see below), whose sum is σ = 80429760. Its totient is φ = 67809280.

The previous prime is 73965629. The next prime is 73965641. The reversal of 73965631 is 13656937.

It is a cyclic number.

It is not a de Polignac number, because 73965631 - 2¹ = 73965629 is a prime.

It is a super-2 number, since 2×73965631² = 10941829138456322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73965641) 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, 115071 + ... + 115711.

It is an arithmetic number, because the mean of its divisors is an integer number (5026860).

Almost surely, 2^73965631 is an apocalyptic number.

73965631 is a deficient number, since it is larger than the sum of its proper divisors (6464129).

73965631 is a wasteful number, since it uses less digits than its factorization.

73965631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866.

The product of its digits is 102060, while the sum is 40.

The square root of 73965631 is about 8600.3273774898. The cubic root of 73965631 is about 419.7686386376.

The spelling of 73965631 in words is "seventy-three million, nine hundred sixty-five thousand, six hundred thirty-one".