990652797 has 6 divisors (see below), whose sum is σ = 1430942942. Its totient is φ = 660435192.

The previous prime is 990652769. The next prime is 990652801. The reversal of 990652797 is 797256099.

It can be written as a sum of positive squares in only one way, i.e., 541679076 + 448973721 = 23274^2 + 21189^2 .

It is not a de Polignac number, because 990652797 - 2²³ = 982264189 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 (990652717) 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, 55036258 + ... + 55036275.

Almost surely, 2^990652797 is an apocalyptic number.

It is an amenable number.

990652797 is a deficient number, since it is larger than the sum of its proper divisors (440290145).

990652797 is a wasteful number, since it uses less digits than its factorization.

990652797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110072539 (or 110072536 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The square root of 990652797 is about 31474.6373608974. The cubic root of 990652797 is about 996.8745071384.

The spelling of 990652797 in words is "nine hundred ninety million, six hundred fifty-two thousand, seven hundred ninety-seven".