70977923 has 4 divisors (see below), whose sum is σ = 71028888. Its totient is φ = 70926960.

The previous prime is 70977917. The next prime is 70977937. The reversal of 70977923 is 32977907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32977907 = 3023 ⋅10909.

It is a cyclic number.

It is not a de Polignac number, because 70977923 - 2⁶ = 70977859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70977223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23333 + ... + 26198.

It is an arithmetic number, because the mean of its divisors is an integer number (17757222).

Almost surely, 2^70977923 is an apocalyptic number.

70977923 is a deficient number, since it is larger than the sum of its proper divisors (50965).

70977923 is a wasteful number, since it uses less digits than its factorization.

70977923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50964.

The product of its (nonzero) digits is 166698, while the sum is 44.

The square root of 70977923 is about 8424.8396423908. The cubic root of 70977923 is about 414.0388517919.

The spelling of 70977923 in words is "seventy million, nine hundred seventy-seven thousand, nine hundred twenty-three".