77423405 has 8 divisors (see below), whose sum is σ = 96947712. Its totient is φ = 59245648.

The previous prime is 77423393. The next prime is 77423443. The reversal of 77423405 is 50432477.

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 77423405 - 2⁸ = 77423149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336509 + ... + 336738.

It is an arithmetic number, because the mean of its divisors is an integer number (12118464).

Almost surely, 2^77423405 is an apocalyptic number.

It is an amenable number.

77423405 is a deficient number, since it is larger than the sum of its proper divisors (19524307).

77423405 is a wasteful number, since it uses less digits than its factorization.

77423405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673275.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 77423405 is about 8799.0570517528. The cubic root of 77423405 is about 426.2104454428.

The spelling of 77423405 in words is "seventy-seven million, four hundred twenty-three thousand, four hundred five".