77568473 has 4 divisors (see below), whose sum is σ = 78293520. Its totient is φ = 76843428.

The previous prime is 77568461. The next prime is 77568481. The reversal of 77568473 is 37486577.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37486577 = 163 ⋅229979.

It is a cyclic number.

It is not a de Polignac number, because 77568473 - 2¹⁴ = 77552089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77568493) 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, 362363 + ... + 362576.

It is an arithmetic number, because the mean of its divisors is an integer number (19573380).

Almost surely, 2^77568473 is an apocalyptic number.

It is an amenable number.

77568473 is a deficient number, since it is larger than the sum of its proper divisors (725047).

77568473 is a wasteful number, since it uses less digits than its factorization.

77568473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725046.

The product of its digits is 987840, while the sum is 47.

The square root of 77568473 is about 8807.2965772705. The cubic root of 77568473 is about 426.4764757664.

The spelling of 77568473 in words is "seventy-seven million, five hundred sixty-eight thousand, four hundred seventy-three".