64429830 has 80 divisors (see below), whose sum is σ = 183474720. Its totient is φ = 16167168.

The previous prime is 64429823. The next prime is 64429843. The reversal of 64429830 is 3892446.

It is a happy number.

64429830 is a `hidden beast` number, since 644 + 2 + 9 + 8 + 3 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11431 + ... + 16109.

It is an arithmetic number, because the mean of its divisors is an integer number (2293434).

Almost surely, 2^64429830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64429830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91737360).

64429830 is an abundant number, since it is smaller than the sum of its proper divisors (119044890).

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

64429830 is a wasteful number, since it uses less digits than its factorization.

64429830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4715 (or 4706 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 64429830 is about 8026.8194199197. The cubic root of 64429830 is about 400.8934819059.

The spelling of 64429830 in words is "sixty-four million, four hundred twenty-nine thousand, eight hundred thirty".