64406136 has 16 divisors (see below), whose sum is σ = 161015400. Its totient is φ = 21468704.

The previous prime is 64406119. The next prime is 64406137. The reversal of 64406136 is 63160446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64406137) 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, 1341771 + ... + 1341818.

Almost surely, 2^64406136 is an apocalyptic number.

It is an amenable number.

64406136 is an abundant number, since it is smaller than the sum of its proper divisors (96609264).

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

64406136 is a wasteful number, since it uses less digits than its factorization.

64406136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683598 (or 2683594 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 64406136 is about 8025.3433571406. The cubic root of 64406136 is about 400.8443331664.

The spelling of 64406136 in words is "sixty-four million, four hundred six thousand, one hundred thirty-six".