64641306 has 32 divisors (see below), whose sum is σ = 136604160.
Its totient is φ = 20335536.
The previous prime is 64641301. The next prime is 64641307. The reversal of 64641306 is 60314646.
It is not an unprimeable number, because it can be changed into a prime (64641301) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34075 + ... + 35921.
It is an arithmetic number, because the mean of its divisors is an integer number (4268880).
Almost surely, 264641306 is an apocalyptic number.
64641306 is an abundant number, since it is smaller than the sum of its proper divisors (71962854).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
64641306 is a wasteful number, since it uses less digits than its factorization.
64641306 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2178.
The product of its (nonzero) digits is 10368, while the sum is 30.
The square root of 64641306 is about 8039.9817163971.
The cubic root of 64641306 is about 401.3316162429.
The spelling of 64641306 in words is "sixty-four million, six hundred forty-one thousand, three hundred six".