77630022 has 32 divisors (see below), whose sum is σ = 172821600. Its totient is φ = 25830144.

The previous prime is 77629999. The next prime is 77630023. The reversal of 77630022 is 22003677.

77630022 is a `hidden beast` number, since 7 + 7 + 630 + 0 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77630023) 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, 42798 + ... + 44574.

It is an arithmetic number, because the mean of its divisors is an integer number (5400675).

Almost surely, 2^77630022 is an apocalyptic number.

77630022 is an abundant number, since it is smaller than the sum of its proper divisors (95191578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77630022 is a wasteful number, since it uses less digits than its factorization.

77630022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597 (or 2591 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 77630022 is about 8810.7900894301. The cubic root of 77630022 is about 426.5892460708.

Adding to 77630022 its reverse (22003677), we get a palindrome (99633699).

The spelling of 77630022 in words is "seventy-seven million, six hundred thirty thousand, twenty-two".