649989095 has 8 divisors (see below), whose sum is σ = 891413664. Its totient is φ = 445706784.

The previous prime is 649989091. The next prime is 649989133. The reversal of 649989095 is 590989946.

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 649989095 - 2² = 649989091 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649989091) 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, 9285524 + ... + 9285593.

It is an arithmetic number, because the mean of its divisors is an integer number (111426708).

Almost surely, 2^649989095 is an apocalyptic number.

649989095 is a deficient number, since it is larger than the sum of its proper divisors (241424569).

649989095 is a wasteful number, since it uses less digits than its factorization.

649989095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18571129.

The product of its (nonzero) digits is 6298560, while the sum is 59.

The square root of 649989095 is about 25494.8837024216. The cubic root of 649989095 is about 866.2342610382.

The spelling of 649989095 in words is "six hundred forty-nine million, nine hundred eighty-nine thousand, ninety-five".