64549672 has 16 divisors (see below), whose sum is σ = 132033600. Its totient is φ = 29340720.

The previous prime is 64549649. The next prime is 64549673. The reversal of 64549672 is 27694546.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64549673) 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, 366672 + ... + 366847.

It is an arithmetic number, because the mean of its divisors is an integer number (8252100).

Almost surely, 2^64549672 is an apocalyptic number.

It is an amenable number.

64549672 is an abundant number, since it is smaller than the sum of its proper divisors (67483928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64549672 is a wasteful number, since it uses less digits than its factorization.

64549672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733536 (or 733532 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 64549672 is about 8034.2810505981. The cubic root of 64549672 is about 401.1418871325.

The spelling of 64549672 in words is "sixty-four million, five hundred forty-nine thousand, six hundred seventy-two".