77446345 has 4 divisors (see below), whose sum is σ = 92935620. Its totient is φ = 61957072.

The previous prime is 77446331. The next prime is 77446351. The reversal of 77446345 is 54364477.

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 25563136 + 51883209 = 5056^2 + 7203^2 .

It is a cyclic number.

It is not a de Polignac number, because 77446345 - 2¹⁵ = 77413577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77446298 and 77446307.

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, 7744630 + ... + 7744639.

It is an arithmetic number, because the mean of its divisors is an integer number (23233905).

Almost surely, 2^77446345 is an apocalyptic number.

It is an amenable number.

77446345 is a deficient number, since it is larger than the sum of its proper divisors (15489275).

77446345 is a wasteful number, since it uses less digits than its factorization.

77446345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15489274.

The product of its digits is 282240, while the sum is 40.

The square root of 77446345 is about 8800.3605039794. The cubic root of 77446345 is about 426.2525356528.

The spelling of 77446345 in words is "seventy-seven million, four hundred forty-six thousand, three hundred forty-five".