64741989 has 32 divisors (see below), whose sum is σ = 95606784. Its totient is φ = 38727360.

The previous prime is 64741979. The next prime is 64742017. The reversal of 64741989 is 98914746.

It is not a de Polignac number, because 64741989 - 2⁹ = 64741477 is a prime.

It is a super-2 number, since 2×64741989² = 8383050279352242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64741979) 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, 285094 + ... + 285320.

It is an arithmetic number, because the mean of its divisors is an integer number (2987712).

Almost surely, 2^64741989 is an apocalyptic number.

It is an amenable number.

64741989 is a deficient number, since it is larger than the sum of its proper divisors (30864795).

64741989 is a wasteful number, since it uses less digits than its factorization.

64741989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its digits is 435456, while the sum is 48.

The square root of 64741989 is about 8046.2406749985. The cubic root of 64741989 is about 401.5398747738.

The spelling of 64741989 in words is "sixty-four million, seven hundred forty-one thousand, nine hundred eighty-nine".