64644462 has 12 divisors (see below), whose sum is σ = 140063040. Its totient is φ = 21548148.

The previous prime is 64644457. The next prime is 64644469. The reversal of 64644462 is 26444646.

It is a happy number.

64644462 is a `hidden beast` number, since 6 + 4 + 644 + 4 + 6 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64644469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1795662 + ... + 1795697.

It is an arithmetic number, because the mean of its divisors is an integer number (11671920).

Almost surely, 2^64644462 is an apocalyptic number.

64644462 is an abundant number, since it is smaller than the sum of its proper divisors (75418578).

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

64644462 is a wasteful number, since it uses less digits than its factorization.

64644462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591367 (or 3591364 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 64644462 is about 8040.1779831046. The cubic root of 64644462 is about 401.3381475774.

The spelling of 64644462 in words is "sixty-four million, six hundred forty-four thousand, four hundred sixty-two".