72069407 has 2 divisors, whose sum is σ = 72069408. Its totient is φ = 72069406.

The previous prime is 72069397. The next prime is 72069449. The reversal of 72069407 is 70496027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72069407 - 2⁶ = 72069343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72069707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36034703 + 36034704.

It is an arithmetic number, because the mean of its divisors is an integer number (36034704).

Almost surely, 2^72069407 is an apocalyptic number.

72069407 is a deficient number, since it is larger than the sum of its proper divisors (1).

72069407 is an equidigital number, since it uses as much as digits as its factorization.

72069407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 72069407 is about 8489.3702357713. The cubic root of 72069407 is about 416.1503998064.

The spelling of 72069407 in words is "seventy-two million, sixty-nine thousand, four hundred seven".