73847731 has 2 divisors, whose sum is σ = 73847732. Its totient is φ = 73847730.

The previous prime is 73847729. The next prime is 73847743. The reversal of 73847731 is 13774837.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73847731 - 2¹ = 73847729 is a prime.

It is a super-2 number, since 2×73847731² = 10906974747696722, which contains 22 as substring.

Together with 73847729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73847791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36923865 + 36923866.

It is an arithmetic number, because the mean of its divisors is an integer number (36923866).

Almost surely, 2^73847731 is an apocalyptic number.

73847731 is a deficient number, since it is larger than the sum of its proper divisors (1).

73847731 is an equidigital number, since it uses as much as digits as its factorization.

73847731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 40.

The square root of 73847731 is about 8593.4702536286. The cubic root of 73847731 is about 419.5454852579.

The spelling of 73847731 in words is "seventy-three million, eight hundred forty-seven thousand, seven hundred thirty-one".