69290257 has 4 divisors (see below), whose sum is σ = 69318180. Its totient is φ = 69262336.

The previous prime is 69290227. The next prime is 69290269. The reversal of 69290257 is 75209296.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43086096 + 26204161 = 6564^2 + 5119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69290257 is a prime.

It is a super-2 number, since 2×69290257² = 9602279430252098, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69290227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9832 + ... + 15337.

It is an arithmetic number, because the mean of its divisors is an integer number (17329545).

Almost surely, 2^69290257 is an apocalyptic number.

It is an amenable number.

69290257 is a deficient number, since it is larger than the sum of its proper divisors (27923).

69290257 is a wasteful number, since it uses less digits than its factorization.

69290257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27922.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 69290257 is about 8324.0769458241. The cubic root of 69290257 is about 410.7309131502.

The spelling of 69290257 in words is "sixty-nine million, two hundred ninety thousand, two hundred fifty-seven".