64140462 has 48 divisors (see below), whose sum is σ = 143754000. Its totient is φ = 20653056.

The previous prime is 64140449. The next prime is 64140467. The reversal of 64140462 is 26404146.

64140462 is a `hidden beast` number, since 64 + 140 + 462 = 666.

It is a super-2 number, since 2×64140462² = 8227997731146888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64140467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128289 + ... + 128787.

It is an arithmetic number, because the mean of its divisors is an integer number (2994875).

Almost surely, 2^64140462 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64140462, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71877000).

64140462 is an abundant number, since it is smaller than the sum of its proper divisors (79613538).

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

64140462 is a wasteful number, since it uses less digits than its factorization.

64140462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 64140462 is about 8008.7740634881. The cubic root of 64140462 is about 400.2924153477.

The spelling of 64140462 in words is "sixty-four million, one hundred forty thousand, four hundred sixty-two".