1000655997 has 8 divisors (see below), whose sum is σ = 1455499680. Its totient is φ = 606458160.

The previous prime is 1000655993. The next prime is 1000656001. The reversal of 1000655997 is 7995560001.

It is an interprime number because it is at equal distance from previous prime (1000655993) and next prime (1000656001).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1000655997 - 2² = 1000655993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000655993) 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, 15161422 + ... + 15161487.

It is an arithmetic number, because the mean of its divisors is an integer number (181937460).

Almost surely, 2^1000655997 is an apocalyptic number.

It is an amenable number.

1000655997 is a deficient number, since it is larger than the sum of its proper divisors (454843683).

1000655997 is a wasteful number, since it uses less digits than its factorization.

1000655997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30322923.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 1000655997 is about 31633.1471244958. The cubic root of 1000655997 is about 1000.2186178694.

The spelling of 1000655997 in words is "one billion, six hundred fifty-five thousand, nine hundred ninety-seven".