64191146 has 4 divisors (see below), whose sum is σ = 96286722. Its totient is φ = 32095572.

The previous prime is 64191103. The next prime is 64191191. The reversal of 64191146 is 64119146.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 59521225 + 4669921 = 7715^2 + 2161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16047785 + ... + 16047788.

Almost surely, 2^64191146 is an apocalyptic number.

64191146 is a deficient number, since it is larger than the sum of its proper divisors (32095576).

64191146 is a wasteful number, since it uses less digits than its factorization.

64191146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32095575.

The product of its digits is 5184, while the sum is 32.

The square root of 64191146 is about 8011.9377181803. The cubic root of 64191146 is about 400.3978250403.

The spelling of 64191146 in words is "sixty-four million, one hundred ninety-one thousand, one hundred forty-six".