77423470 has 16 divisors (see below), whose sum is σ = 139488480. Its totient is φ = 30941344.

The previous prime is 77423453. The next prime is 77423477. The reversal of 77423470 is 7432477.

It is a happy number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 10911 + ... + 16549.

It is an arithmetic number, because the mean of its divisors is an integer number (8718030).

Almost surely, 2^77423470 is an apocalyptic number.

77423470 is a deficient number, since it is larger than the sum of its proper divisors (62065010).

77423470 is a wasteful number, since it uses less digits than its factorization.

77423470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7019.

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 77423470 is about 8799.0607453296. The cubic root of 77423470 is about 426.2105647163.

The spelling of 77423470 in words is "seventy-seven million, four hundred twenty-three thousand, four hundred seventy".