649565146 has 8 divisors (see below), whose sum is σ = 976286304. Its totient is φ = 324136380.

The previous prime is 649565143. The next prime is 649565153. The reversal of 649565146 is 641565946.

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

It is a junction number, because it is equal to n+sod(n) for n = 649565096 and 649565105.

It is not an unprimeable number, because it can be changed into a prime (649565143) 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, 321840 + ... + 323851.

It is an arithmetic number, because the mean of its divisors is an integer number (122035788).

Almost surely, 2^649565146 is an apocalyptic number.

649565146 is a deficient number, since it is larger than the sum of its proper divisors (326721158).

649565146 is a wasteful number, since it uses less digits than its factorization.

649565146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646196.

The product of its digits is 777600, while the sum is 46.

The square root of 649565146 is about 25486.5679525510. The cubic root of 649565146 is about 866.0458891495.

The spelling of 649565146 in words is "six hundred forty-nine million, five hundred sixty-five thousand, one hundred forty-six".