77217482 has 8 divisors (see below), whose sum is σ = 121922400. Its totient is φ = 36576684.

The previous prime is 77217461. The next prime is 77217493. The reversal of 77217482 is 28471277.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 2032039 = 77217482 / (7 + 7 + 2 + 1 + 7 + 4 + 8 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015982 + ... + 1016057.

It is an arithmetic number, because the mean of its divisors is an integer number (15240300).

Almost surely, 2^77217482 is an apocalyptic number.

77217482 is a deficient number, since it is larger than the sum of its proper divisors (44704918).

77217482 is a wasteful number, since it uses less digits than its factorization.

77217482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032060.

The product of its digits is 43904, while the sum is 38.

The square root of 77217482 is about 8787.3478365204. The cubic root of 77217482 is about 425.8322460271.

The spelling of 77217482 in words is "seventy-seven million, two hundred seventeen thousand, four hundred eighty-two".