77427423 has 6 divisors (see below), whose sum is σ = 111839624. Its totient is φ = 51618276.

The previous prime is 77427353. The next prime is 77427439. The reversal of 77427423 is 32472477.

It is not a de Polignac number, because 77427423 - 2⁸ = 77427167 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 (77427443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4301515 + ... + 4301532.

Almost surely, 2^77427423 is an apocalyptic number.

77427423 is a deficient number, since it is larger than the sum of its proper divisors (34412201).

77427423 is a wasteful number, since it uses less digits than its factorization.

77427423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603053 (or 8603050 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 77427423 is about 8799.2853687103. The cubic root of 77427423 is about 426.2178182519.

The spelling of 77427423 in words is "seventy-seven million, four hundred twenty-seven thousand, four hundred twenty-three".