61257268 has 6 divisors (see below), whose sum is σ = 107200226. Its totient is φ = 30628632.

The previous prime is 61257253. The next prime is 61257269. The reversal of 61257268 is 86275216.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45670564 + 15586704 = 6758^2 + 3948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61257269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7657155 + ... + 7657162.

Almost surely, 2^61257268 is an apocalyptic number.

It is an amenable number.

61257268 is a deficient number, since it is larger than the sum of its proper divisors (45942958).

61257268 is a wasteful number, since it uses less digits than its factorization.

61257268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15314321 (or 15314319 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 61257268 is about 7826.7022429629. The cubic root of 61257268 is about 394.2023490997.

The spelling of 61257268 in words is "sixty-one million, two hundred fifty-seven thousand, two hundred sixty-eight".