1064221377 has 4 divisors (see below), whose sum is σ = 1418961840. Its totient is φ = 709480916.

The previous prime is 1064221373. The next prime is 1064221427. The reversal of 1064221377 is 7731224601.

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 not a de Polignac number, because 1064221377 - 2² = 1064221373 is a prime.

It is a super-2 number, since 2×1064221377² = 2265134278527552258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1064221373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177370227 + ... + 177370232.

It is an arithmetic number, because the mean of its divisors is an integer number (354740460).

Almost surely, 2^1064221377 is an apocalyptic number.

It is an amenable number.

1064221377 is a deficient number, since it is larger than the sum of its proper divisors (354740463).

1064221377 is an equidigital number, since it uses as much as digits as its factorization.

1064221377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354740462.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 1064221377 is about 32622.4060578002. The cubic root of 1064221377 is about 1020.9645422456.

Adding to 1064221377 its reverse (7731224601), we get a palindrome (8795445978).

The spelling of 1064221377 in words is "one billion, sixty-four million, two hundred twenty-one thousand, three hundred seventy-seven".