64420606 has 4 divisors (see below), whose sum is σ = 96630912. Its totient is φ = 32210302.

The previous prime is 64420591. The next prime is 64420607. The reversal of 64420606 is 60602446.

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 (64420607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16105150 + ... + 16105153.

It is an arithmetic number, because the mean of its divisors is an integer number (24157728).

Almost surely, 2^64420606 is an apocalyptic number.

64420606 is a deficient number, since it is larger than the sum of its proper divisors (32210306).

64420606 is a wasteful number, since it uses less digits than its factorization.

64420606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32210305.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 64420606 is about 8026.2448255707. The cubic root of 64420606 is about 400.8743498881.

The spelling of 64420606 in words is "sixty-four million, four hundred twenty thousand, six hundred six".