64140262 has 8 divisors (see below), whose sum is σ = 98447976. Its totient is φ = 31324272.

The previous prime is 64140233. The next prime is 64140301. The reversal of 64140262 is 26204146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64140262² = 8227946418857288, which contains 22 as substring.

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, 372823 + ... + 372994.

It is an arithmetic number, because the mean of its divisors is an integer number (12305997).

Almost surely, 2^64140262 is an apocalyptic number.

64140262 is a deficient number, since it is larger than the sum of its proper divisors (34307714).

64140262 is a wasteful number, since it uses less digits than its factorization.

64140262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745862.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 64140262 is about 8008.7615771728. The cubic root of 64140262 is about 400.2919992892.

The spelling of 64140262 in words is "sixty-four million, one hundred forty thousand, two hundred sixty-two".