72693769 has 2 divisors, whose sum is σ = 72693770. Its totient is φ = 72693768.

The previous prime is 72693743. The next prime is 72693773. The reversal of 72693769 is 96739627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42575625 + 30118144 = 6525^2 + 5488^2 .

It is a cyclic number.

It is not a de Polignac number, because 72693769 - 2⁵ = 72693737 is a prime.

It is a super-2 number, since 2×72693769² = 10568768102850722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72693469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36346884 + 36346885.

It is an arithmetic number, because the mean of its divisors is an integer number (36346885).

Almost surely, 2^72693769 is an apocalyptic number.

It is an amenable number.

72693769 is a deficient number, since it is larger than the sum of its proper divisors (1).

72693769 is an equidigital number, since it uses as much as digits as its factorization.

72693769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 49.

The square root of 72693769 is about 8526.0640978121. The cubic root of 72693769 is about 417.3486972509.

The spelling of 72693769 in words is "seventy-two million, six hundred ninety-three thousand, seven hundred sixty-nine".