77371369 has 6 divisors (see below), whose sum is σ = 82190654. Its totient is φ = 72819840.

The previous prime is 77371367. The next prime is 77371421. The reversal of 77371369 is 96317377.

It can be written as a sum of positive squares in 3 ways, for example, as 20820969 + 56550400 = 4563^2 + 7520^2 .

It is not a de Polignac number, because 77371369 - 2¹ = 77371367 is a prime.

It is a super-2 number, since 2×77371369² = 11972657481868322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77371367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133572 + ... + 134149.

Almost surely, 2^77371369 is an apocalyptic number.

It is an amenable number.

77371369 is a deficient number, since it is larger than the sum of its proper divisors (4819285).

77371369 is a wasteful number, since it uses less digits than its factorization.

77371369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267755 (or 267738 counting only the distinct ones).

The product of its digits is 166698, while the sum is 43.

The square root of 77371369 is about 8796.0996470026. The cubic root of 77371369 is about 426.1149391927.

The spelling of 77371369 in words is "seventy-seven million, three hundred seventy-one thousand, three hundred sixty-nine".