64343951 has 4 divisors (see below), whose sum is σ = 73535952. Its totient is φ = 55151952.

The previous prime is 64343933. The next prime is 64343957. The reversal of 64343951 is 15934346.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64343951 - 2⁶ = 64343887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64343957) 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, 4595990 + ... + 4596003.

It is an arithmetic number, because the mean of its divisors is an integer number (18383988).

Almost surely, 2^64343951 is an apocalyptic number.

64343951 is a deficient number, since it is larger than the sum of its proper divisors (9192001).

64343951 is an equidigital number, since it uses as much as digits as its factorization.

64343951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9192000.

The product of its digits is 38880, while the sum is 35.

The square root of 64343951 is about 8021.4681324556. The cubic root of 64343951 is about 400.7152847403.

The spelling of 64343951 in words is "sixty-four million, three hundred forty-three thousand, nine hundred fifty-one".