70020649 has 2 divisors, whose sum is σ = 70020650. Its totient is φ = 70020648.

The previous prime is 70020631. The next prime is 70020653. The reversal of 70020649 is 94602007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67947049 + 2073600 = 8243^2 + 1440^2 .

It is a cyclic number.

It is not a de Polignac number, because 70020649 - 2⁵ = 70020617 is a prime.

It is not a weakly prime, because it can be changed into another prime (70020689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35010324 + 35010325.

It is an arithmetic number, because the mean of its divisors is an integer number (35010325).

Almost surely, 2^70020649 is an apocalyptic number.

It is an amenable number.

70020649 is a deficient number, since it is larger than the sum of its proper divisors (1).

70020649 is an equidigital number, since it uses as much as digits as its factorization.

70020649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 70020649 is about 8367.8341881278. The cubic root of 70020649 is about 412.1690500064.

The spelling of 70020649 in words is "seventy million, twenty thousand, six hundred forty-nine".