77227047 has 16 divisors (see below), whose sum is σ = 116352000. Its totient is φ = 50611032.

The previous prime is 77227043. The next prime is 77227091. The reversal of 77227047 is 74072277.

It is not a de Polignac number, because 77227047 - 2² = 77227043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77227043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22647 + ... + 25832.

It is an arithmetic number, because the mean of its divisors is an integer number (7272000).

Almost surely, 2^77227047 is an apocalyptic number.

77227047 is a deficient number, since it is larger than the sum of its proper divisors (39124953).

77227047 is a wasteful number, since it uses less digits than its factorization.

77227047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48547 (or 48541 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 36.

The square root of 77227047 is about 8787.8920680673. The cubic root of 77227047 is about 425.8498280442.

The spelling of 77227047 in words is "seventy-seven million, two hundred twenty-seven thousand, forty-seven".