77423543 has 8 divisors (see below), whose sum is σ = 80892000. Its totient is φ = 73963648.

The previous prime is 77423531. The next prime is 77423551. The reversal of 77423543 is 34532477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77423543 - 2⁴ = 77423527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77423443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22523 + ... + 25731.

It is an arithmetic number, because the mean of its divisors is an integer number (10111500).

Almost surely, 2^77423543 is an apocalyptic number.

77423543 is a deficient number, since it is larger than the sum of its proper divisors (3468457).

77423543 is a wasteful number, since it uses less digits than its factorization.

77423543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281.

The product of its digits is 70560, while the sum is 35.

The square root of 77423543 is about 8799.0648934986. The cubic root of 77423543 is about 426.2106986694.

The spelling of 77423543 in words is "seventy-seven million, four hundred twenty-three thousand, five hundred forty-three".