77344007 has 4 divisors (see below), whose sum is σ = 83293560. Its totient is φ = 71394456.

The previous prime is 77343991. The next prime is 77344019. The reversal of 77344007 is 70044377.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77344007 - 2⁴ = 77343991 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 (77344087) 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, 2974757 + ... + 2974782.

It is an arithmetic number, because the mean of its divisors is an integer number (20823390).

Almost surely, 2^77344007 is an apocalyptic number.

77344007 is a deficient number, since it is larger than the sum of its proper divisors (5949553).

77344007 is a wasteful number, since it uses less digits than its factorization.

77344007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5949552.

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 77344007 is about 8794.5441610126. The cubic root of 77344007 is about 426.0647021269.

The spelling of 77344007 in words is "seventy-seven million, three hundred forty-four thousand, seven".