77214447 has 12 divisors (see below), whose sum is σ = 112001760. Its totient is φ = 51259488.

The previous prime is 77214437. The next prime is 77214463. The reversal of 77214447 is 74441277.

It is not a de Polignac number, because 77214447 - 2⁸ = 77214191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77214407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15798 + ... + 20099.

It is an arithmetic number, because the mean of its divisors is an integer number (9333480).

Almost surely, 2^77214447 is an apocalyptic number.

77214447 is a deficient number, since it is larger than the sum of its proper divisors (34787313).

77214447 is a wasteful number, since it uses less digits than its factorization.

77214447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36142 (or 36139 counting only the distinct ones).

The product of its digits is 43904, while the sum is 36.

The square root of 77214447 is about 8787.1751433552. The cubic root of 77214447 is about 425.8266669027.

The spelling of 77214447 in words is "seventy-seven million, two hundred fourteen thousand, four hundred forty-seven".