77583397 has 2 divisors, whose sum is σ = 77583398. Its totient is φ = 77583396.

The previous prime is 77583367. The next prime is 77583437. The reversal of 77583397 is 79338577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54552996 + 23030401 = 7386^2 + 4799^2 .

It is a cyclic number.

It is not a de Polignac number, because 77583397 - 2⁷ = 77583269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77583397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77583367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38791698 + 38791699.

It is an arithmetic number, because the mean of its divisors is an integer number (38791699).

Almost surely, 2^77583397 is an apocalyptic number.

It is an amenable number.

77583397 is a deficient number, since it is larger than the sum of its proper divisors (1).

77583397 is an equidigital number, since it uses as much as digits as its factorization.

77583397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 49.

The square root of 77583397 is about 8808.1437885629. The cubic root of 77583397 is about 426.5038250512.

The spelling of 77583397 in words is "seventy-seven million, five hundred eighty-three thousand, three hundred ninety-seven".