662551551 has 6 divisors (see below), whose sum is σ = 957018920. Its totient is φ = 441701028.

The previous prime is 662551541. The next prime is 662551559. The reversal of 662551551 is 155155266.

It is not a de Polignac number, because 662551551 - 2²⁷ = 528333823 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 (662551559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36808411 + ... + 36808428.

Almost surely, 2^662551551 is an apocalyptic number.

662551551 is a deficient number, since it is larger than the sum of its proper divisors (294467369).

662551551 is a wasteful number, since it uses less digits than its factorization.

662551551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73616845 (or 73616842 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 662551551 is about 25740.0767481373. The cubic root of 662551551 is about 871.7793113315.

The spelling of 662551551 in words is "six hundred sixty-two million, five hundred fifty-one thousand, five hundred fifty-one".