662651551 has 8 divisors (see below), whose sum is σ = 732137184. Its totient is φ = 596555520.

The previous prime is 662651533. The next prime is 662651557. The reversal of 662651551 is 155156266.

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 662651551 - 2⁹ = 662651039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 662651551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662651557) 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 7 ways as a sum of consecutive naturals, for example, 846990 + ... + 847771.

It is an arithmetic number, because the mean of its divisors is an integer number (91517148).

Almost surely, 2^662651551 is an apocalyptic number.

662651551 is a deficient number, since it is larger than the sum of its proper divisors (69485633).

662651551 is a wasteful number, since it uses less digits than its factorization.

662651551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694801.

The product of its digits is 54000, while the sum is 37.

The square root of 662651551 is about 25742.0191709974. The cubic root of 662651551 is about 871.8231688222.

The spelling of 662651551 in words is "six hundred sixty-two million, six hundred fifty-one thousand, five hundred fifty-one".