70986919 has 2 divisors, whose sum is σ = 70986920. Its totient is φ = 70986918.

The previous prime is 70986913. The next prime is 70986953. The reversal of 70986919 is 91968907.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70986919 - 2⁵ = 70986887 is a prime.

It is a super-2 number, since 2×70986919² = 10078285338225122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70986913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35493459 + 35493460.

It is an arithmetic number, because the mean of its divisors is an integer number (35493460).

Almost surely, 2^70986919 is an apocalyptic number.

70986919 is a deficient number, since it is larger than the sum of its proper divisors (1).

70986919 is an equidigital number, since it uses as much as digits as its factorization.

70986919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 70986919 is about 8425.3735228772. The cubic root of 70986919 is about 414.0563433161.

The spelling of 70986919 in words is "seventy million, nine hundred eighty-six thousand, nine hundred nineteen".