69921701 has 2 divisors, whose sum is σ = 69921702. Its totient is φ = 69921700.

The previous prime is 69921689. The next prime is 69921703. The reversal of 69921701 is 10712996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68973025 + 948676 = 8305^2 + 974^2 .

It is a cyclic number.

It is not a de Polignac number, because 69921701 - 2⁶ = 69921637 is a prime.

Together with 69921703, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69921703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34960850 + 34960851.

It is an arithmetic number, because the mean of its divisors is an integer number (34960851).

Almost surely, 2^69921701 is an apocalyptic number.

It is an amenable number.

69921701 is a deficient number, since it is larger than the sum of its proper divisors (1).

69921701 is an equidigital number, since it uses as much as digits as its factorization.

69921701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 69921701 is about 8361.9196958593. The cubic root of 69921701 is about 411.9748095479.

The spelling of 69921701 in words is "sixty-nine million, nine hundred twenty-one thousand, seven hundred one".