72344777 has 2 divisors, whose sum is σ = 72344778. Its totient is φ = 72344776.

The previous prime is 72344773. The next prime is 72344813. The reversal of 72344777 is 77744327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49266361 + 23078416 = 7019^2 + 4804^2 .

It is a cyclic number.

It is not a de Polignac number, because 72344777 - 2² = 72344773 is a prime.

It is not a weakly prime, because it can be changed into another prime (72344771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36172388 + 36172389.

It is an arithmetic number, because the mean of its divisors is an integer number (36172389).

Almost surely, 2^72344777 is an apocalyptic number.

It is an amenable number.

72344777 is a deficient number, since it is larger than the sum of its proper divisors (1).

72344777 is an equidigital number, since it uses as much as digits as its factorization.

72344777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230496, while the sum is 41.

The square root of 72344777 is about 8505.5732904961. The cubic root of 72344777 is about 416.6797492070.

The spelling of 72344777 in words is "seventy-two million, three hundred forty-four thousand, seven hundred seventy-seven".