64245406 has 4 divisors (see below), whose sum is σ = 96368112. Its totient is φ = 32122702.

The previous prime is 64245347. The next prime is 64245409. The reversal of 64245406 is 60454246.

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 (64245409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16061350 + ... + 16061353.

It is an arithmetic number, because the mean of its divisors is an integer number (24092028).

Almost surely, 2^64245406 is an apocalyptic number.

64245406 is a deficient number, since it is larger than the sum of its proper divisors (32122706).

64245406 is a wasteful number, since it uses less digits than its factorization.

64245406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32122705.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 64245406 is about 8015.3231999714. The cubic root of 64245406 is about 400.5106104152.

The spelling of 64245406 in words is "sixty-four million, two hundred forty-five thousand, four hundred six".