77876485 has 4 divisors (see below), whose sum is σ = 93451788. Its totient is φ = 62301184.

The previous prime is 77876479. The next prime is 77876501. The reversal of 77876485 is 58467877.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58467877 = 13 ⋅4497529.

It can be written as a sum of positive squares in 2 ways, for example, as 41563809 + 36312676 = 6447^2 + 6026^2 .

It is a cyclic number.

It is not a de Polignac number, because 77876485 - 2¹³ = 77868293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7787644 + ... + 7787653.

It is an arithmetic number, because the mean of its divisors is an integer number (23362947).

Almost surely, 2^77876485 is an apocalyptic number.

It is an amenable number.

77876485 is a deficient number, since it is larger than the sum of its proper divisors (15575303).

77876485 is a wasteful number, since it uses less digits than its factorization.

77876485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15575302.

The product of its digits is 2634240, while the sum is 52.

The square root of 77876485 is about 8824.7654359762. The cubic root of 77876485 is about 427.0402202021.

The spelling of 77876485 in words is "seventy-seven million, eight hundred seventy-six thousand, four hundred eighty-five".