72919061 has 2 divisors, whose sum is σ = 72919062. Its totient is φ = 72919060.

The previous prime is 72919027. The next prime is 72919081. The reversal of 72919061 is 16091927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42172036 + 30747025 = 6494^2 + 5545^2 .

It is a cyclic number.

It is not a de Polignac number, because 72919061 - 2¹⁰ = 72918037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72919081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36459530 + 36459531.

It is an arithmetic number, because the mean of its divisors is an integer number (36459531).

Almost surely, 2^72919061 is an apocalyptic number.

It is an amenable number.

72919061 is a deficient number, since it is larger than the sum of its proper divisors (1).

72919061 is an equidigital number, since it uses as much as digits as its factorization.

72919061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 72919061 is about 8539.2658349533. The cubic root of 72919061 is about 417.7794006280.

The spelling of 72919061 in words is "seventy-two million, nine hundred nineteen thousand, sixty-one".