64147951 has 8 divisors (see below), whose sum is σ = 73360800. Its totient is φ = 54947328.

The previous prime is 64147883. The next prime is 64147991. The reversal of 64147951 is 15974146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64147951 - 2⁷ = 64147823 is a prime.

It is a super-2 number, since 2×64147951² = 8229919234996802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64147951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64147991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16875 + ... + 20323.

It is an arithmetic number, because the mean of its divisors is an integer number (9170100).

Almost surely, 2^64147951 is an apocalyptic number.

64147951 is a deficient number, since it is larger than the sum of its proper divisors (9212849).

64147951 is a wasteful number, since it uses less digits than its factorization.

64147951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6113.

The product of its digits is 30240, while the sum is 37.

The square root of 64147951 is about 8009.2415995524. The cubic root of 64147951 is about 400.3079940383.

It can be divided in two parts, 6414 and 7951, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 64147951 in words is "sixty-four million, one hundred forty-seven thousand, nine hundred fifty-one".