64346143 has 4 divisors (see below), whose sum is σ = 64421568. Its totient is φ = 64270720.

The previous prime is 64346137. The next prime is 64346147. The reversal of 64346143 is 34164346.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34164346 = 2 ⋅17082173.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64346143 is a prime.

It is a super-2 number, since 2×64346143² = 8280852237952898, 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 (64346147) 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, 36418 + ... + 38143.

It is an arithmetic number, because the mean of its divisors is an integer number (16105392).

Almost surely, 2^64346143 is an apocalyptic number.

64346143 is a deficient number, since it is larger than the sum of its proper divisors (75425).

64346143 is an equidigital number, since it uses as much as digits as its factorization.

64346143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75424.

The product of its digits is 20736, while the sum is 31.

The square root of 64346143 is about 8021.6047646341. The cubic root of 64346143 is about 400.7198350666.

The spelling of 64346143 in words is "sixty-four million, three hundred forty-six thousand, one hundred forty-three".