651154663 has 4 divisors (see below), whose sum is σ = 652567608. Its totient is φ = 649741720.

The previous prime is 651154631. The next prime is 651154667. The reversal of 651154663 is 366451156.

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

It is a cyclic number.

It is not a de Polignac number, because 651154663 - 2⁵ = 651154631 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 (651154667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705781 + ... + 706702.

It is an arithmetic number, because the mean of its divisors is an integer number (163141902).

Almost surely, 2^651154663 is an apocalyptic number.

651154663 is a deficient number, since it is larger than the sum of its proper divisors (1412945).

651154663 is a wasteful number, since it uses less digits than its factorization.

651154663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412944.

The product of its digits is 64800, while the sum is 37.

The square root of 651154663 is about 25517.7323247972. The cubic root of 651154663 is about 866.7517322979.

The spelling of 651154663 in words is "six hundred fifty-one million, one hundred fifty-four thousand, six hundred sixty-three".