64700100 has 144 divisors (see below), whose sum is σ = 214986240. Its totient is φ = 16675200.

The previous prime is 64700089. The next prime is 64700101. The reversal of 64700100 is 100746.

It is a super-2 number, since 2×64700100² = 8372205880020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (64700101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83314 + ... + 84086.

It is an arithmetic number, because the mean of its divisors is an integer number (1492960).

Almost surely, 2^64700100 is an apocalyptic number.

64700100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64700100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107493120).

64700100 is an abundant number, since it is smaller than the sum of its proper divisors (150286140).

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

64700100 is a wasteful number, since it uses less digits than its factorization.

64700100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 64700100 is about 8043.6372369718. The cubic root of 64700100 is about 401.4532553944.

Adding to 64700100 its reverse (100746), we get a palindrome (64800846).

The spelling of 64700100 in words is "sixty-four million, seven hundred thousand, one hundred".