74779907 has 2 divisors, whose sum is σ = 74779908. Its totient is φ = 74779906.

The previous prime is 74779853. The next prime is 74779931. The reversal of 74779907 is 70997747.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74779907 - 2¹⁴ = 74763523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74779937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37389953 + 37389954.

It is an arithmetic number, because the mean of its divisors is an integer number (37389954).

Almost surely, 2^74779907 is an apocalyptic number.

74779907 is a deficient number, since it is larger than the sum of its proper divisors (1).

74779907 is an equidigital number, since it uses as much as digits as its factorization.

74779907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777924, while the sum is 50.

The square root of 74779907 is about 8647.5376263998. The cubic root of 74779907 is about 421.3034093011.

The spelling of 74779907 in words is "seventy-four million, seven hundred seventy-nine thousand, nine hundred seven".