64849040 has 40 divisors (see below), whose sum is σ = 151115328. Its totient is φ = 25880960.

The previous prime is 64849027. The next prime is 64849063. The reversal of 64849040 is 4094846.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58895 + ... + 59985.

Almost surely, 2^64849040 is an apocalyptic number.

It is an amenable number.

64849040 is an abundant number, since it is smaller than the sum of its proper divisors (86266288).

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

64849040 is a wasteful number, since it uses less digits than its factorization.

64849040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847 (or 1841 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 64849040 is about 8052.8901644068. The cubic root of 64849040 is about 401.7610685487.

The spelling of 64849040 in words is "sixty-four million, eight hundred forty-nine thousand, forty".