70622647 has 2 divisors, whose sum is σ = 70622648. Its totient is φ = 70622646.

The previous prime is 70622633. The next prime is 70622663. The reversal of 70622647 is 74622607.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70622647 - 2¹⁵ = 70589879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70622347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35311323 + 35311324.

It is an arithmetic number, because the mean of its divisors is an integer number (35311324).

Almost surely, 2^70622647 is an apocalyptic number.

70622647 is a deficient number, since it is larger than the sum of its proper divisors (1).

70622647 is an equidigital number, since it uses as much as digits as its factorization.

70622647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 70622647 is about 8403.7281607629. The cubic root of 70622647 is about 413.3468799035.

The spelling of 70622647 in words is "seventy million, six hundred twenty-two thousand, six hundred forty-seven".