65148639 has 8 divisors (see below), whose sum is σ = 89667072. Its totient is φ = 42031320.

The previous prime is 65148637. The next prime is 65148653. The reversal of 65148639 is 93684156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65148639 - 2¹ = 65148637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65148639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65148637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350169 + ... + 350354.

It is an arithmetic number, because the mean of its divisors is an integer number (11208384).

Almost surely, 2^65148639 is an apocalyptic number.

65148639 is a deficient number, since it is larger than the sum of its proper divisors (24518433).

65148639 is a wasteful number, since it uses less digits than its factorization.

65148639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700557.

The product of its digits is 155520, while the sum is 42.

The square root of 65148639 is about 8071.4706838345. The cubic root of 65148639 is about 402.3788228766.

The spelling of 65148639 in words is "sixty-five million, one hundred forty-eight thousand, six hundred thirty-nine".