73497731 has 2 divisors, whose sum is σ = 73497732. Its totient is φ = 73497730.

The previous prime is 73497679. The next prime is 73497733. The reversal of 73497731 is 13779437.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73497731 - 2²⁶ = 6388867 is a prime.

It is a super-2 number, since 2×73497731² = 10803832924296722, which contains 22 as substring.

Together with 73497733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73497733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36748865 + 36748866.

It is an arithmetic number, because the mean of its divisors is an integer number (36748866).

Almost surely, 2^73497731 is an apocalyptic number.

73497731 is a deficient number, since it is larger than the sum of its proper divisors (1).

73497731 is an equidigital number, since it uses as much as digits as its factorization.

73497731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 41.

The square root of 73497731 is about 8573.0817679525. The cubic root of 73497731 is about 418.8816259269.

The spelling of 73497731 in words is "seventy-three million, four hundred ninety-seven thousand, seven hundred thirty-one".