65273687 has 4 divisors (see below), whose sum is σ = 66505320. Its totient is φ = 64042056.

The previous prime is 65273633. The next prime is 65273711. The reversal of 65273687 is 78637256.

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 65273687 - 2¹⁰ = 65272663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65273617) 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, 615737 + ... + 615842.

It is an arithmetic number, because the mean of its divisors is an integer number (16626330).

Almost surely, 2^65273687 is an apocalyptic number.

65273687 is a deficient number, since it is larger than the sum of its proper divisors (1231633).

65273687 is a wasteful number, since it uses less digits than its factorization.

65273687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231632.

The product of its digits is 423360, while the sum is 44.

The square root of 65273687 is about 8079.2132661541. The cubic root of 65273687 is about 402.6361038117.

The spelling of 65273687 in words is "sixty-five million, two hundred seventy-three thousand, six hundred eighty-seven".