77286401 has 4 divisors (see below), whose sum is σ = 78596400. Its totient is φ = 75976404.

The previous prime is 77286397. The next prime is 77286439. The reversal of 77286401 is 10468277.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77286401 - 2² = 77286397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77286491) 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, 654911 + ... + 655028.

It is an arithmetic number, because the mean of its divisors is an integer number (19649100).

Almost surely, 2^77286401 is an apocalyptic number.

It is an amenable number.

77286401 is a deficient number, since it is larger than the sum of its proper divisors (1309999).

77286401 is a wasteful number, since it uses less digits than its factorization.

77286401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309998.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 77286401 is about 8791.2684522770. The cubic root of 77286401 is about 425.9588978543.

The spelling of 77286401 in words is "seventy-seven million, two hundred eighty-six thousand, four hundred one".