70977213 has 6 divisors (see below), whose sum is σ = 102522654. Its totient is φ = 47318136.

The previous prime is 70977173. The next prime is 70977223. The reversal of 70977213 is 31277907.

It can be written as a sum of positive squares in only one way, i.e., 51236964 + 19740249 = 7158^2 + 4443^2 .

It is not a de Polignac number, because 70977213 - 2¹⁰ = 70976189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70977223) 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, 3943170 + ... + 3943187.

It is an arithmetic number, because the mean of its divisors is an integer number (17087109).

Almost surely, 2^70977213 is an apocalyptic number.

It is an amenable number.

70977213 is a deficient number, since it is larger than the sum of its proper divisors (31545441).

70977213 is a wasteful number, since it uses less digits than its factorization.

70977213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886363 (or 7886360 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 70977213 is about 8424.7975049849. The cubic root of 70977213 is about 414.0374712285.

The spelling of 70977213 in words is "seventy million, nine hundred seventy-seven thousand, two hundred thirteen".