6616251 has 6 divisors (see below), whose sum is σ = 9556820. Its totient is φ = 4410828.

The previous prime is 6616231. The next prime is 6616271. The reversal of 6616251 is 1526166.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6616231) and next prime (6616271).

It is not a de Polignac number, because 6616251 - 2⁵ = 6616219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6616231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367561 + ... + 367578.

Almost surely, 2^6616251 is an apocalyptic number.

6616251 is a deficient number, since it is larger than the sum of its proper divisors (2940569).

6616251 is a wasteful number, since it uses less digits than its factorization.

6616251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735145 (or 735142 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 6616251 is about 2572.2074177640. The cubic root of 6616251 is about 187.7315752045.

The spelling of 6616251 in words is "six million, six hundred sixteen thousand, two hundred fifty-one".