70505719 has 2 divisors, whose sum is σ = 70505720. Its totient is φ = 70505718.

The previous prime is 70505693. The next prime is 70505723. The reversal of 70505719 is 91750507.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70505719 is a prime.

It is a super-2 number, since 2×70505719² = 9942112823413922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70505779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35252859 + 35252860.

It is an arithmetic number, because the mean of its divisors is an integer number (35252860).

Almost surely, 2^70505719 is an apocalyptic number.

70505719 is a deficient number, since it is larger than the sum of its proper divisors (1).

70505719 is an equidigital number, since it uses as much as digits as its factorization.

70505719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 70505719 is about 8396.7683664610. The cubic root of 70505719 is about 413.1186314851.

It can be divided in two parts, 7050 and 5719, that added together give a square (12769 = 113²).

The spelling of 70505719 in words is "seventy million, five hundred five thousand, seven hundred nineteen".