77223477 has 16 divisors (see below), whose sum is σ = 106134912. Its totient is φ = 49907520.

The previous prime is 77223439. The next prime is 77223481. The reversal of 77223477 is 77432277.

It is not a de Polignac number, because 77223477 - 2¹⁴ = 77207093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77223407) 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 15 ways as a sum of consecutive naturals, for example, 33403 + ... + 35639.

It is an arithmetic number, because the mean of its divisors is an integer number (6633432).

Almost surely, 2^77223477 is an apocalyptic number.

It is an amenable number.

77223477 is a deficient number, since it is larger than the sum of its proper divisors (28911435).

77223477 is a wasteful number, since it uses less digits than its factorization.

77223477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588.

The product of its digits is 115248, while the sum is 39.

The square root of 77223477 is about 8787.6889453371. The cubic root of 77223477 is about 425.8432659765.

The spelling of 77223477 in words is "seventy-seven million, two hundred twenty-three thousand, four hundred seventy-seven".