77955107 has 4 divisors (see below), whose sum is σ = 79276440. Its totient is φ = 76633776.

The previous prime is 77955091. The next prime is 77955139. The reversal of 77955107 is 70155977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70155977 = 6037 ⋅11621.

It is a cyclic number.

It is not a de Polignac number, because 77955107 - 2⁴ = 77955091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77955407) 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, 660578 + ... + 660695.

It is an arithmetic number, because the mean of its divisors is an integer number (19819110).

Almost surely, 2^77955107 is an apocalyptic number.

77955107 is a deficient number, since it is larger than the sum of its proper divisors (1321333).

77955107 is a wasteful number, since it uses less digits than its factorization.

77955107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321332.

The product of its (nonzero) digits is 77175, while the sum is 41.

The square root of 77955107 is about 8829.2189348775. The cubic root of 77955107 is about 427.1838812992.

The spelling of 77955107 in words is "seventy-seven million, nine hundred fifty-five thousand, one hundred seven".