64606040 has 16 divisors (see below), whose sum is σ = 145363680. Its totient is φ = 25842400.

The previous prime is 64606039. The next prime is 64606063. The reversal of 64606040 is 4060646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807536 + ... + 807615.

It is an arithmetic number, because the mean of its divisors is an integer number (9085230).

Almost surely, 2^64606040 is an apocalyptic number.

It is an amenable number.

64606040 is an abundant number, since it is smaller than the sum of its proper divisors (80757640).

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

64606040 is a wasteful number, since it uses less digits than its factorization.

64606040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615162 (or 1615158 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 64606040 is about 8037.7882529960. The cubic root of 64606040 is about 401.2586188759.

Adding to 64606040 its reverse (4060646), we get a palindrome (68666686).

The spelling of 64606040 in words is "sixty-four million, six hundred six thousand, forty".