64478629 has 12 divisors (see below), whose sum is σ = 68370016. Its totient is φ = 60773328.

The previous prime is 64478621. The next prime is 64478641. The reversal of 64478629 is 92687446.

It is a happy number.

It is not a de Polignac number, because 64478629 - 2³ = 64478621 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 (64478621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35272 + ... + 37054.

Almost surely, 2^64478629 is an apocalyptic number.

It is an amenable number.

64478629 is a deficient number, since it is larger than the sum of its proper divisors (3891387).

64478629 is a wasteful number, since it uses less digits than its factorization.

64478629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884 (or 1855 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 64478629 is about 8029.8585915320. The cubic root of 64478629 is about 400.9946682873.

The spelling of 64478629 in words is "sixty-four million, four hundred seventy-eight thousand, six hundred twenty-nine".