64632406 has 4 divisors (see below), whose sum is σ = 96948612. Its totient is φ = 32316202.

The previous prime is 64632343. The next prime is 64632409. The reversal of 64632406 is 60423646.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64632409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16158100 + ... + 16158103.

It is an arithmetic number, because the mean of its divisors is an integer number (24237153).

Almost surely, 2^64632406 is an apocalyptic number.

64632406 is a deficient number, since it is larger than the sum of its proper divisors (32316206).

64632406 is a wasteful number, since it uses less digits than its factorization.

64632406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32316205.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 64632406 is about 8039.4282134988. The cubic root of 64632406 is about 401.3131965690.

The spelling of 64632406 in words is "sixty-four million, six hundred thirty-two thousand, four hundred six".