77345671 has 8 divisors (see below), whose sum is σ = 84539504. Its totient is φ = 70329600.

The previous prime is 77345659. The next prime is 77345677. The reversal of 77345671 is 17654377.

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 77345671 - 2¹⁵ = 77312903 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 (77345677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43530 + ... + 45271.

It is an arithmetic number, because the mean of its divisors is an integer number (10567438).

Almost surely, 2^77345671 is an apocalyptic number.

77345671 is a deficient number, since it is larger than the sum of its proper divisors (7193833).

77345671 is a wasteful number, since it uses less digits than its factorization.

77345671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88881.

The product of its digits is 123480, while the sum is 40.

The square root of 77345671 is about 8794.6387646111. The cubic root of 77345671 is about 426.0677575956.

The spelling of 77345671 in words is "seventy-seven million, three hundred forty-five thousand, six hundred seventy-one".