64828061 has 4 divisors (see below), whose sum is σ = 65795712. Its totient is φ = 63860412.

The previous prime is 64828051. The next prime is 64828069. The reversal of 64828061 is 16082846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64828061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64828069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483725 + ... + 483858.

It is an arithmetic number, because the mean of its divisors is an integer number (16448928).

Almost surely, 2^64828061 is an apocalyptic number.

It is an amenable number.

64828061 is a deficient number, since it is larger than the sum of its proper divisors (967651).

64828061 is an equidigital number, since it uses as much as digits as its factorization.

64828061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967650.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 64828061 is about 8051.5874832234. The cubic root of 64828061 is about 401.7177399478.

The spelling of 64828061 in words is "sixty-four million, eight hundred twenty-eight thousand, sixty-one".