77800481 has 4 divisors (see below), whose sum is σ = 84873264. Its totient is φ = 70727700.

The previous prime is 77800477. The next prime is 77800501. The reversal of 77800481 is 18400877.

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 77800481 - 2² = 77800477 is a prime.

It is a super-2 number, since 2×77800481² = 12105829687662722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77800441) 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, 3536375 + ... + 3536396.

It is an arithmetic number, because the mean of its divisors is an integer number (21218316).

Almost surely, 2^77800481 is an apocalyptic number.

It is an amenable number.

77800481 is a deficient number, since it is larger than the sum of its proper divisors (7072783).

77800481 is a wasteful number, since it uses less digits than its factorization.

77800481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7072782.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 77800481 is about 8820.4580946797. The cubic root of 77800481 is about 426.9012508696.

The spelling of 77800481 in words is "seventy-seven million, eight hundred thousand, four hundred eighty-one".