65149499 has 4 divisors (see below), whose sum is σ = 68578440. Its totient is φ = 61720560.

The previous prime is 65149481. The next prime is 65149517. The reversal of 65149499 is 99494156.

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

It is an interprime number because it is at equal distance from previous prime (65149481) and next prime (65149517).

It is a cyclic number.

It is not a de Polignac number, because 65149499 - 2²⁰ = 64100923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65149459) 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, 1714442 + ... + 1714479.

It is an arithmetic number, because the mean of its divisors is an integer number (17144610).

Almost surely, 2^65149499 is an apocalyptic number.

65149499 is a deficient number, since it is larger than the sum of its proper divisors (3428941).

65149499 is a wasteful number, since it uses less digits than its factorization.

65149499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428940.

The product of its digits is 349920, while the sum is 47.

The square root of 65149499 is about 8071.5239577170. The cubic root of 65149499 is about 402.3805934138.

The spelling of 65149499 in words is "sixty-five million, one hundred forty-nine thousand, four hundred ninety-nine".