69869731 has 2 divisors, whose sum is σ = 69869732. Its totient is φ = 69869730.

The previous prime is 69869689. The next prime is 69869743. The reversal of 69869731 is 13796896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69869731 - 2¹⁹ = 69345443 is a prime.

It is a super-2 number, since 2×69869731² = 9763558620024722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (69869771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34934865 + 34934866.

It is an arithmetic number, because the mean of its divisors is an integer number (34934866).

Almost surely, 2^69869731 is an apocalyptic number.

69869731 is a deficient number, since it is larger than the sum of its proper divisors (1).

69869731 is an equidigital number, since it uses as much as digits as its factorization.

69869731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 69869731 is about 8358.8115782090. The cubic root of 69869731 is about 411.8727161243.

The spelling of 69869731 in words is "sixty-nine million, eight hundred sixty-nine thousand, seven hundred thirty-one".