77622066 has 12 divisors (see below), whose sum is σ = 168181182. Its totient is φ = 25874016.

The previous prime is 77622059. The next prime is 77622121. The reversal of 77622066 is 66022677.

It can be written as a sum of positive squares in only one way, i.e., 76475025 + 1147041 = 8745^2 + 1071^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77622066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2156151 + ... + 2156186.

Almost surely, 2^77622066 is an apocalyptic number.

77622066 is an abundant number, since it is smaller than the sum of its proper divisors (90559116).

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

77622066 is a wasteful number, since it uses less digits than its factorization.

77622066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312345 (or 4312342 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 77622066 is about 8810.3385860022. The cubic root of 77622066 is about 426.5746724136.

The spelling of 77622066 in words is "seventy-seven million, six hundred twenty-two thousand, sixty-six".