64250489 has 4 divisors (see below), whose sum is σ = 64351056. Its totient is φ = 64149924.

The previous prime is 64250467. The next prime is 64250491. The reversal of 64250489 is 98405246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98405246 = 2 ⋅49202623.

It is a cyclic number.

It is not a de Polignac number, because 64250489 - 2²⁰ = 63201913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64255489) 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, 49319 + ... + 50604.

It is an arithmetic number, because the mean of its divisors is an integer number (16087764).

Almost surely, 2^64250489 is an apocalyptic number.

It is an amenable number.

64250489 is a deficient number, since it is larger than the sum of its proper divisors (100567).

64250489 is an equidigital number, since it uses as much as digits as its factorization.

64250489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100566.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 64250489 is about 8015.6402738646. The cubic root of 64250489 is about 400.5211727359.

The spelling of 64250489 in words is "sixty-four million, two hundred fifty thousand, four hundred eighty-nine".