1064500061 has 4 divisors (see below), whose sum is σ = 1120526400. Its totient is φ = 1008473724.

The previous prime is 1064500057. The next prime is 1064500069. The reversal of 1064500061 is 1600054601.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1600054601 = 17749 ⋅90149.

It is a cyclic number.

It is not a de Polignac number, because 1064500061 - 2² = 1064500057 is a prime.

It is a super-2 number, since 2×1064500061² = 2266320759738007442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064500069) 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, 28013141 + ... + 28013178.

It is an arithmetic number, because the mean of its divisors is an integer number (280131600).

Almost surely, 2^1064500061 is an apocalyptic number.

It is an amenable number.

1064500061 is a deficient number, since it is larger than the sum of its proper divisors (56026339).

1064500061 is an equidigital number, since it uses as much as digits as its factorization.

1064500061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56026338.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1064500061 is about 32626.6771369688. The cubic root of 1064500061 is about 1021.0536532947.

Adding to 1064500061 its reverse (1600054601), we get a palindrome (2664554662).

The spelling of 1064500061 in words is "one billion, sixty-four million, five hundred thousand, sixty-one".