9620900261 has 4 divisors (see below), whose sum is σ = 10995314592. Its totient is φ = 8246485932.

The previous prime is 9620900257. The next prime is 9620900269. The reversal of 9620900261 is 1620090269.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9620900261 - 2² = 9620900257 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 (9620900269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687207155 + ... + 687207168.

It is an arithmetic number, because the mean of its divisors is an integer number (2748828648).

Almost surely, 2^9620900261 is an apocalyptic number.

It is an amenable number.

9620900261 is a deficient number, since it is larger than the sum of its proper divisors (1374414331).

9620900261 is a wasteful number, since it uses less digits than its factorization.

9620900261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374414330.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 9620900261 is about 98086.1879216437. The cubic root of 9620900261 is about 2126.8583705289.

The spelling of 9620900261 in words is "nine billion, six hundred twenty million, nine hundred thousand, two hundred sixty-one".