64086438 has 32 divisors (see below), whose sum is σ = 140103936. Its totient is φ = 19423008.

The previous prime is 64086401. The next prime is 64086457. The reversal of 64086438 is 83468046.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 64086396 and 64086405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906 + ... + 11357.

It is an arithmetic number, because the mean of its divisors is an integer number (4378248).

Almost surely, 2^64086438 is an apocalyptic number.

64086438 is an abundant number, since it is smaller than the sum of its proper divisors (76017498).

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

64086438 is a wasteful number, since it uses less digits than its factorization.

64086438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12348.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 64086438 is about 8005.4005521273. The cubic root of 64086438 is about 400.1799981562.

It can be divided in two parts, 640 and 86438, that added together give a palindrome (87078).

The spelling of 64086438 in words is "sixty-four million, eighty-six thousand, four hundred thirty-eight".