64861383 has 8 divisors (see below), whose sum is σ = 91033600. Its totient is φ = 40965048.

The previous prime is 64861373. The next prime is 64861387. The reversal of 64861383 is 38316846.

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

It is not a de Polignac number, because 64861383 - 2⁶ = 64861319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64861387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568903 + ... + 569016.

It is an arithmetic number, because the mean of its divisors is an integer number (11379200).

Almost surely, 2^64861383 is an apocalyptic number.

64861383 is a deficient number, since it is larger than the sum of its proper divisors (26172217).

64861383 is a wasteful number, since it uses less digits than its factorization.

64861383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137941.

The product of its digits is 82944, while the sum is 39.

The square root of 64861383 is about 8053.6564987588. The cubic root of 64861383 is about 401.7865565759.

The spelling of 64861383 in words is "sixty-four million, eight hundred sixty-one thousand, three hundred eighty-three".