72940207 has 2 divisors, whose sum is σ = 72940208. Its totient is φ = 72940206.

The previous prime is 72940187. The next prime is 72940211. The reversal of 72940207 is 70204927.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72940207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72940247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36470103 + 36470104.

It is an arithmetic number, because the mean of its divisors is an integer number (36470104).

Almost surely, 2^72940207 is an apocalyptic number.

72940207 is a deficient number, since it is larger than the sum of its proper divisors (1).

72940207 is an equidigital number, since it uses as much as digits as its factorization.

72940207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 72940207 is about 8540.5039078499. The cubic root of 72940207 is about 417.8197810592.

The spelling of 72940207 in words is "seventy-two million, nine hundred forty thousand, two hundred seven".