70491247 has 2 divisors, whose sum is σ = 70491248. Its totient is φ = 70491246.

The previous prime is 70491229. The next prime is 70491263. The reversal of 70491247 is 74219407.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70491247 - 2⁷ = 70491119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70491227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35245623 + 35245624.

It is an arithmetic number, because the mean of its divisors is an integer number (35245624).

Almost surely, 2^70491247 is an apocalyptic number.

70491247 is a deficient number, since it is larger than the sum of its proper divisors (1).

70491247 is an equidigital number, since it uses as much as digits as its factorization.

70491247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 70491247 is about 8395.9065621290. The cubic root of 70491247 is about 413.0903639818.

The spelling of 70491247 in words is "seventy million, four hundred ninety-one thousand, two hundred forty-seven".