70801919 has 2 divisors, whose sum is σ = 70801920. Its totient is φ = 70801918.

The previous prime is 70801883. The next prime is 70801921. The reversal of 70801919 is 91910807.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70801919 is a prime.

It is a super-2 number, since 2×70801919² = 10025823468165122, which contains 22 as substring.

Together with 70801921, 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 (70801019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35400959 + 35400960.

It is an arithmetic number, because the mean of its divisors is an integer number (35400960).

Almost surely, 2^70801919 is an apocalyptic number.

70801919 is a deficient number, since it is larger than the sum of its proper divisors (1).

70801919 is an equidigital number, since it uses as much as digits as its factorization.

70801919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 70801919 is about 8414.3876188348. The cubic root of 70801919 is about 413.6963377251.

The spelling of 70801919 in words is "seventy million, eight hundred one thousand, nine hundred nineteen".