77706106 has 4 divisors (see below), whose sum is σ = 116559162. Its totient is φ = 38853052.

The previous prime is 77706103. The next prime is 77706107. The reversal of 77706106 is 60160777.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61230625 + 16475481 = 7825^2 + 4059^2 .

It is not an unprimeable number, because it can be changed into a prime (77706103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19426525 + ... + 19426528.

Almost surely, 2^77706106 is an apocalyptic number.

77706106 is a deficient number, since it is larger than the sum of its proper divisors (38853056).

77706106 is a wasteful number, since it uses less digits than its factorization.

77706106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38853055.

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 77706106 is about 8815.1066924910. The cubic root of 77706106 is about 426.7285651028.

The spelling of 77706106 in words is "seventy-seven million, seven hundred six thousand, one hundred six".