75706977 has 4 divisors (see below), whose sum is σ = 100942640. Its totient is φ = 50471316.

The previous prime is 75706937. The next prime is 75706987. The reversal of 75706977 is 77960757.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 75706977 - 2¹⁰ = 75705953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75706927) 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, 12617827 + ... + 12617832.

It is an arithmetic number, because the mean of its divisors is an integer number (25235660).

Almost surely, 2^75706977 is an apocalyptic number.

It is an amenable number.

75706977 is a deficient number, since it is larger than the sum of its proper divisors (25235663).

75706977 is a wasteful number, since it uses less digits than its factorization.

75706977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25235662.

The product of its (nonzero) digits is 648270, while the sum is 48.

The square root of 75706977 is about 8700.9756349504. The cubic root of 75706977 is about 423.0372740712.

The spelling of 75706977 in words is "seventy-five million, seven hundred six thousand, nine hundred seventy-seven".