77896281 has 4 divisors (see below), whose sum is σ = 103861712. Its totient is φ = 51930852.

The previous prime is 77896279. The next prime is 77896283. The reversal of 77896281 is 18269877.

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 an interprime number because it is at equal distance from previous prime (77896279) and next prime (77896283).

It is not a de Polignac number, because 77896281 - 2¹ = 77896279 is a prime.

It is a super-2 number, since 2×77896281² = 12135661187261922, which contains 22 as substring.

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 77896281.

It is not an unprimeable number, because it can be changed into a prime (77896283) 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, 12982711 + ... + 12982716.

It is an arithmetic number, because the mean of its divisors is an integer number (25965428).

Almost surely, 2^77896281 is an apocalyptic number.

It is an amenable number.

77896281 is a deficient number, since it is larger than the sum of its proper divisors (25965431).

77896281 is a wasteful number, since it uses less digits than its factorization.

77896281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25965430.

The product of its digits is 338688, while the sum is 48.

The square root of 77896281 is about 8825.8869809215. The cubic root of 77896281 is about 427.0764013078.

The spelling of 77896281 in words is "seventy-seven million, eight hundred ninety-six thousand, two hundred eighty-one".