64120193 has 4 divisors (see below), whose sum is σ = 67494960. Its totient is φ = 60745428.

The previous prime is 64120129. The next prime is 64120249. The reversal of 64120193 is 39102146.

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: 39102146 = 2 ⋅19551073.

It is a cyclic number.

It is not a de Polignac number, because 64120193 - 2⁶ = 64120129 is a prime.

It is a super-2 number, since 2×64120193² = 8222798300714498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64129193) 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, 1687355 + ... + 1687392.

It is an arithmetic number, because the mean of its divisors is an integer number (16873740).

Almost surely, 2^64120193 is an apocalyptic number.

It is an amenable number.

64120193 is a deficient number, since it is larger than the sum of its proper divisors (3374767).

64120193 is a wasteful number, since it uses less digits than its factorization.

64120193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374766.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 64120193 is about 8007.5085388653. The cubic root of 64120193 is about 400.2502454937.

The spelling of 64120193 in words is "sixty-four million, one hundred twenty thousand, one hundred ninety-three".