77621122 has 8 divisors (see below), whose sum is σ = 116502336. Its totient is φ = 38787012.

The previous prime is 77621101. The next prime is 77621129. The reversal of 77621122 is 22112677.

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

It is not an unprimeable number, because it can be changed into a prime (77621129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7318 + ... + 14449.

It is an arithmetic number, because the mean of its divisors is an integer number (14562792).

Almost surely, 2^77621122 is an apocalyptic number.

77621122 is a deficient number, since it is larger than the sum of its proper divisors (38881214).

77621122 is a wasteful number, since it uses less digits than its factorization.

77621122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23552.

The product of its digits is 2352, while the sum is 28.

The square root of 77621122 is about 8810.2850124159. The cubic root of 77621122 is about 426.5729431453.

Adding to 77621122 its reverse (22112677), we get a palindrome (99733799).

The spelling of 77621122 in words is "seventy-seven million, six hundred twenty-one thousand, one hundred twenty-two".