64149333 has 4 divisors (see below), whose sum is σ = 85532448. Its totient is φ = 42766220.

The previous prime is 64149329. The next prime is 64149359. The reversal of 64149333 is 33394146.

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.

It is a cyclic number.

It is not a de Polignac number, because 64149333 - 2² = 64149329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64149294 and 64149303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64149373) 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, 10691553 + ... + 10691558.

It is an arithmetic number, because the mean of its divisors is an integer number (21383112).

Almost surely, 2^64149333 is an apocalyptic number.

It is an amenable number.

64149333 is a deficient number, since it is larger than the sum of its proper divisors (21383115).

64149333 is a wasteful number, since it uses less digits than its factorization.

64149333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21383114.

The product of its digits is 23328, while the sum is 33.

The square root of 64149333 is about 8009.3278744224. The cubic root of 64149333 is about 400.3108687556.

The spelling of 64149333 in words is "sixty-four million, one hundred forty-nine thousand, three hundred thirty-three".