65250247 has 4 divisors (see below), whose sum is σ = 66144160. Its totient is φ = 64356336.

The previous prime is 65250217. The next prime is 65250253. The reversal of 65250247 is 74205256.

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

It is a cyclic number.

It is not a de Polignac number, because 65250247 - 2¹⁹ = 64725959 is a prime.

It is a super-2 number, since 2×65250247² = 8515189467122018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65250217) 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, 446847 + ... + 446992.

It is an arithmetic number, because the mean of its divisors is an integer number (16536040).

Almost surely, 2^65250247 is an apocalyptic number.

65250247 is a deficient number, since it is larger than the sum of its proper divisors (893913).

65250247 is an equidigital number, since it uses as much as digits as its factorization.

65250247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893912.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 65250247 is about 8077.7624996035. The cubic root of 65250247 is about 402.5879020496.

The spelling of 65250247 in words is "sixty-five million, two hundred fifty thousand, two hundred forty-seven".