64397629 has 8 divisors (see below), whose sum is σ = 65175840. Its totient is φ = 63622896.

The previous prime is 64397623. The next prime is 64397647. The reversal of 64397629 is 92679346.

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 64397629 - 2¹¹ = 64395581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64397623) 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, 59707 + ... + 60775.

It is an arithmetic number, because the mean of its divisors is an integer number (8146980).

Almost surely, 2^64397629 is an apocalyptic number.

It is an amenable number.

64397629 is a deficient number, since it is larger than the sum of its proper divisors (778211).

64397629 is a wasteful number, since it uses less digits than its factorization.

64397629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739.

The product of its digits is 489888, while the sum is 46.

The square root of 64397629 is about 8024.8133311623. The cubic root of 64397629 is about 400.8266840567.

The spelling of 64397629 in words is "sixty-four million, three hundred ninety-seven thousand, six hundred twenty-nine".