64147933 has 8 divisors (see below), whose sum is σ = 67600800. Its totient is φ = 60702768.

The previous prime is 64147883. The next prime is 64147991. The reversal of 64147933 is 33974146.

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 64147933 - 2¹³ = 64139741 is a prime.

It is a super-2 number, since 2×64147933² = 8229914616344978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64147892 and 64147901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64141933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24858 + ... + 27316.

It is an arithmetic number, because the mean of its divisors is an integer number (8450100).

Almost surely, 2^64147933 is an apocalyptic number.

It is an amenable number.

64147933 is a deficient number, since it is larger than the sum of its proper divisors (3452867).

64147933 is a wasteful number, since it uses less digits than its factorization.

64147933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851.

The product of its digits is 54432, while the sum is 37.

The square root of 64147933 is about 8009.2404758504. The cubic root of 64147933 is about 400.3079565960.

The spelling of 64147933 in words is "sixty-four million, one hundred forty-seven thousand, nine hundred thirty-three".