651082655 has 4 divisors (see below), whose sum is σ = 781299192. Its totient is φ = 520866120.

The previous prime is 651082639. The next prime is 651082657. The reversal of 651082655 is 556280156.

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

It is not a de Polignac number, because 651082655 - 2⁴ = 651082639 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 (651082657) 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, 65108261 + ... + 65108270.

It is an arithmetic number, because the mean of its divisors is an integer number (195324798).

Almost surely, 2^651082655 is an apocalyptic number.

651082655 is a deficient number, since it is larger than the sum of its proper divisors (130216537).

651082655 is a wasteful number, since it uses less digits than its factorization.

651082655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130216536.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 651082655 is about 25516.3213453664. The cubic root of 651082655 is about 866.7197811793.

The spelling of 651082655 in words is "six hundred fifty-one million, eighty-two thousand, six hundred fifty-five".