64861401 has 8 divisors (see below), whose sum is σ = 94343904. Its totient is φ = 39309920.

The previous prime is 64861399. The next prime is 64861441. The reversal of 64861401 is 10416846.

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

It is a cyclic number.

It is not a de Polignac number, because 64861401 - 2¹ = 64861399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64861441) 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, 982716 + ... + 982781.

It is an arithmetic number, because the mean of its divisors is an integer number (11792988).

Almost surely, 2^64861401 is an apocalyptic number.

It is an amenable number.

64861401 is a deficient number, since it is larger than the sum of its proper divisors (29482503).

64861401 is a wasteful number, since it uses less digits than its factorization.

64861401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965511.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 64861401 is about 8053.6576162636. The cubic root of 64861401 is about 401.7865937431.

It can be divided in two parts, 6486 and 1401, that added together give a palindrome (7887).

The spelling of 64861401 in words is "sixty-four million, eight hundred sixty-one thousand, four hundred one".