70005977 has 2 divisors, whose sum is σ = 70005978. Its totient is φ = 70005976.

The previous prime is 70005973. The next prime is 70005989. The reversal of 70005977 is 77950007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67584841 + 2421136 = 8221^2 + 1556^2 .

It is a cyclic number.

It is not a de Polignac number, because 70005977 - 2² = 70005973 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70005973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35002988 + 35002989.

It is an arithmetic number, because the mean of its divisors is an integer number (35002989).

Almost surely, 2^70005977 is an apocalyptic number.

It is an amenable number.

70005977 is a deficient number, since it is larger than the sum of its proper divisors (1).

70005977 is an equidigital number, since it uses as much as digits as its factorization.

70005977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15435, while the sum is 35.

The square root of 70005977 is about 8366.9574517862. The cubic root of 70005977 is about 412.1402596100.

The spelling of 70005977 in words is "seventy million, five thousand, nine hundred seventy-seven".