77040377 has 4 divisors (see below), whose sum is σ = 78303396. Its totient is φ = 75777360.

The previous prime is 77040343. The next prime is 77040427. The reversal of 77040377 is 77304077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77304077 = 2437 ⋅31721.

It can be written as a sum of positive squares in 2 ways, for example, as 2062096 + 74978281 = 1436^2 + 8659^2 .

It is a cyclic number.

It is not a de Polignac number, because 77040377 - 2²⁰ = 75991801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77040577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631418 + ... + 631539.

It is an arithmetic number, because the mean of its divisors is an integer number (19575849).

Almost surely, 2^77040377 is an apocalyptic number.

It is an amenable number.

77040377 is a deficient number, since it is larger than the sum of its proper divisors (1263019).

77040377 is a wasteful number, since it uses less digits than its factorization.

77040377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263018.

The product of its (nonzero) digits is 28812, while the sum is 35.

The square root of 77040377 is about 8777.2647789616. The cubic root of 77040377 is about 425.5064357310.

The spelling of 77040377 in words is "seventy-seven million, forty thousand, three hundred seventy-seven".