77454723 has 4 divisors (see below), whose sum is σ = 103272968. Its totient is φ = 51636480.

The previous prime is 77454719. The next prime is 77454757. The reversal of 77454723 is 32745477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32745477 = 3 ⋅10915159.

It is not a de Polignac number, because 77454723 - 2² = 77454719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77454763) 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, 12909118 + ... + 12909123.

It is an arithmetic number, because the mean of its divisors is an integer number (25818242).

Almost surely, 2^77454723 is an apocalyptic number.

77454723 is a deficient number, since it is larger than the sum of its proper divisors (25818245).

77454723 is a wasteful number, since it uses less digits than its factorization.

77454723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25818244.

The product of its digits is 164640, while the sum is 39.

The square root of 77454723 is about 8800.8364943339. The cubic root of 77454723 is about 426.2679054979.

The spelling of 77454723 in words is "seventy-seven million, four hundred fifty-four thousand, seven hundred twenty-three".