664110249 has 32 divisors (see below), whose sum is σ = 1026984960. Its totient is φ = 377496000.

The previous prime is 664110221. The next prime is 664110277. The reversal of 664110249 is 942011466.

It is an interprime number because it is at equal distance from previous prime (664110221) and next prime (664110277).

It is not a de Polignac number, because 664110249 - 2²⁷ = 529892521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (664110289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58084 + ... + 68570.

It is an arithmetic number, because the mean of its divisors is an integer number (32093280).

Almost surely, 2^664110249 is an apocalyptic number.

It is an amenable number.

664110249 is a deficient number, since it is larger than the sum of its proper divisors (362874711).

664110249 is a wasteful number, since it uses less digits than its factorization.

664110249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10621.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 664110249 is about 25770.3366101415. The cubic root of 664110249 is about 872.4624161499.

The spelling of 664110249 in words is "six hundred sixty-four million, one hundred ten thousand, two hundred forty-nine".