64490111 has 8 divisors (see below), whose sum is σ = 73764864. Its totient is φ = 55230840.

The previous prime is 64490071. The next prime is 64490131. The reversal of 64490111 is 11109446.

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

It is a de Polignac number, because none of the positive numbers 2^k-64490111 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 (64490131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7166 + ... + 13428.

It is an arithmetic number, because the mean of its divisors is an integer number (9220608).

Almost surely, 2^64490111 is an apocalyptic number.

64490111 is a deficient number, since it is larger than the sum of its proper divisors (9274753).

64490111 is a wasteful number, since it uses less digits than its factorization.

64490111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7741.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 64490111 is about 8030.5735162565. The cubic root of 64490111 is about 401.0184691837.

Adding to 64490111 its reverse (11109446), we get a palindrome (75599557).

The spelling of 64490111 in words is "sixty-four million, four hundred ninety thousand, one hundred eleven".