70379669 has 2 divisors, whose sum is σ = 70379670. Its totient is φ = 70379668.

The previous prime is 70379663. The next prime is 70379671. The reversal of 70379669 is 96697307.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68277169 + 2102500 = 8263^2 + 1450^2 .

It is a cyclic number.

It is not a de Polignac number, because 70379669 - 2¹⁶ = 70314133 is a prime.

It is a super-2 number, since 2×70379669² = 9906595617099122, which contains 22 as substring.

Together with 70379671, 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 (70379663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35189834 + 35189835.

It is an arithmetic number, because the mean of its divisors is an integer number (35189835).

Almost surely, 2^70379669 is an apocalyptic number.

It is an amenable number.

70379669 is a deficient number, since it is larger than the sum of its proper divisors (1).

70379669 is an equidigital number, since it uses as much as digits as its factorization.

70379669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 47.

The square root of 70379669 is about 8389.2591448828. The cubic root of 70379669 is about 412.8722937059.

The spelling of 70379669 in words is "seventy million, three hundred seventy-nine thousand, six hundred sixty-nine".