78630499 has 2 divisors, whose sum is σ = 78630500. Its totient is φ = 78630498.

The previous prime is 78630479. The next prime is 78630511. The reversal of 78630499 is 99403687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78630499 - 2¹³ = 78622307 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78630449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39315249 + 39315250.

It is an arithmetic number, because the mean of its divisors is an integer number (39315250).

Almost surely, 2^78630499 is an apocalyptic number.

78630499 is a deficient number, since it is larger than the sum of its proper divisors (1).

78630499 is an equidigital number, since it uses as much as digits as its factorization.

78630499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 78630499 is about 8867.3839998051. The cubic root of 78630499 is about 428.4140223905.

The spelling of 78630499 in words is "seventy-eight million, six hundred thirty thousand, four hundred ninety-nine".