77423473 has 4 divisors (see below), whose sum is σ = 77447920. Its totient is φ = 77399028.

The previous prime is 77423453. The next prime is 77423477. The reversal of 77423473 is 37432477.

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 77423473 - 2²⁵ = 43869041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77423477) 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, 6615 + ... + 14092.

It is an arithmetic number, because the mean of its divisors is an integer number (19361980).

Almost surely, 2^77423473 is an apocalyptic number.

It is an amenable number.

77423473 is a deficient number, since it is larger than the sum of its proper divisors (24447).

77423473 is a wasteful number, since it uses less digits than its factorization.

77423473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24446.

The product of its digits is 98784, while the sum is 37.

The square root of 77423473 is about 8799.0609158023. The cubic root of 77423473 is about 426.2105702212.

The spelling of 77423473 in words is "seventy-seven million, four hundred twenty-three thousand, four hundred seventy-three".