70420577 has 2 divisors, whose sum is σ = 70420578. Its totient is φ = 70420576.

The previous prime is 70420573. The next prime is 70420591. The reversal of 70420577 is 77502407.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67831696 + 2588881 = 8236^2 + 1609^2 .

It is a cyclic number.

It is not a de Polignac number, because 70420577 - 2² = 70420573 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70420573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35210288 + 35210289.

It is an arithmetic number, because the mean of its divisors is an integer number (35210289).

Almost surely, 2^70420577 is an apocalyptic number.

It is an amenable number.

70420577 is a deficient number, since it is larger than the sum of its proper divisors (1).

70420577 is an equidigital number, since it uses as much as digits as its factorization.

70420577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 70420577 is about 8391.6969082540. The cubic root of 70420577 is about 412.9522718620.

The spelling of 70420577 in words is "seventy million, four hundred twenty thousand, five hundred seventy-seven".