77340377 has 4 divisors (see below), whose sum is σ = 78209460. Its totient is φ = 76471296.

The previous prime is 77340353. The next prime is 77340407. The reversal of 77340377 is 77304377.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40081561 + 37258816 = 6331^2 + 6104^2 .

It is a cyclic number.

It is not a de Polignac number, because 77340377 - 2¹⁴ = 77323993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77340377.

It is not an unprimeable number, because it can be changed into a prime (77340577) 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, 434408 + ... + 434585.

It is an arithmetic number, because the mean of its divisors is an integer number (19552365).

Almost surely, 2^77340377 is an apocalyptic number.

It is an amenable number.

77340377 is a deficient number, since it is larger than the sum of its proper divisors (869083).

77340377 is an equidigital number, since it uses as much as digits as its factorization.

77340377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869082.

The product of its (nonzero) digits is 86436, while the sum is 38.

The square root of 77340377 is about 8794.3377806405. The cubic root of 77340377 is about 426.0580364992.

The spelling of 77340377 in words is "seventy-seven million, three hundred forty thousand, three hundred seventy-seven".