77145022 has 8 divisors (see below), whose sum is σ = 117018000. Its totient is φ = 38139024.

The previous prime is 77144999. The next prime is 77145049. The reversal of 77145022 is 22054177.

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

It is a congruent number.

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, 216522 + ... + 216877.

It is an arithmetic number, because the mean of its divisors is an integer number (14627250).

Almost surely, 2^77145022 is an apocalyptic number.

77145022 is a deficient number, since it is larger than the sum of its proper divisors (39872978).

77145022 is a wasteful number, since it uses less digits than its factorization.

77145022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433490.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 77145022 is about 8783.2238955864. The cubic root of 77145022 is about 425.6990056418.

Adding to 77145022 its reverse (22054177), we get a palindrome (99199199).

The spelling of 77145022 in words is "seventy-seven million, one hundred forty-five thousand, twenty-two".