69472261 has 2 divisors, whose sum is σ = 69472262. Its totient is φ = 69472260.

The previous prime is 69472223. The next prime is 69472279. The reversal of 69472261 is 16227496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69472225 + 36 = 8335^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 69472261 - 2¹⁹ = 68947973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69472261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69472201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34736130 + 34736131.

It is an arithmetic number, because the mean of its divisors is an integer number (34736131).

Almost surely, 2^69472261 is an apocalyptic number.

It is an amenable number.

69472261 is a deficient number, since it is larger than the sum of its proper divisors (1).

69472261 is an equidigital number, since it uses as much as digits as its factorization.

69472261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 69472261 is about 8335.0021595678. The cubic root of 69472261 is about 411.0902196158.

The spelling of 69472261 in words is "sixty-nine million, four hundred seventy-two thousand, two hundred sixty-one".