72797741 has 2 divisors, whose sum is σ = 72797742. Its totient is φ = 72797740.

The previous prime is 72797731. The next prime is 72797749. The reversal of 72797741 is 14779727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50197225 + 22600516 = 7085^2 + 4754^2 .

It is a cyclic number.

It is not a de Polignac number, because 72797741 - 2⁶ = 72797677 is a prime.

It is a super-2 number, since 2×72797741² = 10599022189406162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72797692 and 72797701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72797749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36398870 + 36398871.

It is an arithmetic number, because the mean of its divisors is an integer number (36398871).

Almost surely, 2^72797741 is an apocalyptic number.

It is an amenable number.

72797741 is a deficient number, since it is larger than the sum of its proper divisors (1).

72797741 is an equidigital number, since it uses as much as digits as its factorization.

72797741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172872, while the sum is 44.

The square root of 72797741 is about 8532.1592226118. The cubic root of 72797741 is about 417.5475767790.

The spelling of 72797741 in words is "seventy-two million, seven hundred ninety-seven thousand, seven hundred forty-one".