64230557 has 4 divisors (see below), whose sum is σ = 65966556. Its totient is φ = 62494560.

The previous prime is 64230553. The next prime is 64230571. The reversal of 64230557 is 75503246.

64230557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46430596 + 17799961 = 6814^2 + 4219^2 .

It is a cyclic number.

It is not a de Polignac number, because 64230557 - 2² = 64230553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64230553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867944 + ... + 868017.

It is an arithmetic number, because the mean of its divisors is an integer number (16491639).

Almost surely, 2^64230557 is an apocalyptic number.

It is an amenable number.

64230557 is a deficient number, since it is larger than the sum of its proper divisors (1735999).

64230557 is a wasteful number, since it uses less digits than its factorization.

64230557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735998.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 64230557 is about 8014.3968581547. The cubic root of 64230557 is about 400.4797514497.

The spelling of 64230557 in words is "sixty-four million, two hundred thirty thousand, five hundred fifty-seven".