70894969 has 2 divisors, whose sum is σ = 70894970. Its totient is φ = 70894968.

The previous prime is 70894939. The next prime is 70894979. The reversal of 70894969 is 96949807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70761744 + 133225 = 8412^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 70894969 - 2⁹ = 70894457 is a prime.

It is a super-2 number, since 2×70894969² = 10052193259021922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70894939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35447484 + 35447485.

It is an arithmetic number, because the mean of its divisors is an integer number (35447485).

Almost surely, 2^70894969 is an apocalyptic number.

It is an amenable number.

70894969 is a deficient number, since it is larger than the sum of its proper divisors (1).

70894969 is an equidigital number, since it uses as much as digits as its factorization.

70894969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 70894969 is about 8419.9150233242. The cubic root of 70894969 is about 413.8774890911.

The spelling of 70894969 in words is "seventy million, eight hundred ninety-four thousand, nine hundred sixty-nine".