64899846 has 64 divisors (see below), whose sum is σ = 166613760. Its totient is φ = 18506880.

The previous prime is 64899827. The next prime is 64899869.

64899846 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64899792 and 64899801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6885 + ... + 13311.

It is an arithmetic number, because the mean of its divisors is an integer number (2603340).

Almost surely, 2^64899846 is an apocalyptic number.

64899846 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 64899846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83306880).

64899846 is an abundant number, since it is smaller than the sum of its proper divisors (101713914).

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

64899846 is a wasteful number, since it uses less digits than its factorization.

64899846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6466 (or 6460 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 64899846 is about 8056.0440664137. The cubic root of 64899846 is about 401.8659611043.

The spelling of 64899846 in words is "sixty-four million, eight hundred ninety-nine thousand, eight hundred forty-six".