6506630997 has 16 divisors (see below), whose sum is σ = 9354851520. Its totient is φ = 4009219200.

The previous prime is 6506630993. The next prime is 6506631011. The reversal of 6506630997 is 7990366056.

It is not a de Polignac number, because 6506630997 - 2² = 6506630993 is a prime.

It is a super-2 number, since 2×6506630997² = 84672493862242428018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6506630993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1389754 + ... + 1394427.

It is an arithmetic number, because the mean of its divisors is an integer number (584678220).

Almost surely, 2^6506630997 is an apocalyptic number.

It is an amenable number.

6506630997 is a deficient number, since it is larger than the sum of its proper divisors (2848220523).

6506630997 is a wasteful number, since it uses less digits than its factorization.

6506630997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784244.

The product of its (nonzero) digits is 1837080, while the sum is 51.

The square root of 6506630997 is about 80663.6906978598. The cubic root of 6506630997 is about 1866.8899850418.

The spelling of 6506630997 in words is "six billion, five hundred six million, six hundred thirty thousand, nine hundred ninety-seven".