72634651 has 2 divisors, whose sum is σ = 72634652. Its totient is φ = 72634650.

The previous prime is 72634649. The next prime is 72634687. The reversal of 72634651 is 15643627.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72634651 - 2¹ = 72634649 is a prime.

Together with 72634649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72634151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36317325 + 36317326.

It is an arithmetic number, because the mean of its divisors is an integer number (36317326).

Almost surely, 2^72634651 is an apocalyptic number.

72634651 is a deficient number, since it is larger than the sum of its proper divisors (1).

72634651 is an equidigital number, since it uses as much as digits as its factorization.

72634651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 72634651 is about 8522.5964940269. The cubic root of 72634651 is about 417.2355306893.

The spelling of 72634651 in words is "seventy-two million, six hundred thirty-four thousand, six hundred fifty-one".