77321106 has 12 divisors (see below), whose sum is σ = 167529102. Its totient is φ = 25773696.

The previous prime is 77321081. The next prime is 77321107. The reversal of 77321106 is 60112377.

It can be written as a sum of positive squares in only one way, i.e., 56115081 + 21206025 = 7491^2 + 4605^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77321106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77321107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2147791 + ... + 2147826.

Almost surely, 2^77321106 is an apocalyptic number.

77321106 is an abundant number, since it is smaller than the sum of its proper divisors (90207996).

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

77321106 is a wasteful number, since it uses less digits than its factorization.

77321106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295625 (or 4295622 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 77321106 is about 8793.2420642218. The cubic root of 77321106 is about 426.0226464189.

The spelling of 77321106 in words is "seventy-seven million, three hundred twenty-one thousand, one hundred six".