961263649 has 8 divisors (see below), whose sum is σ = 969856640. Its totient is φ = 952703856.

The previous prime is 961263647. The next prime is 961263659. The reversal of 961263649 is 946362169.

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

It is a cyclic number.

It is not a de Polignac number, because 961263649 - 2¹ = 961263647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 961263599 and 961263608.

It is not an unprimeable number, because it can be changed into a prime (961263647) 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, 51787 + ... + 67855.

It is an arithmetic number, because the mean of its divisors is an integer number (121232080).

Almost surely, 2^961263649 is an apocalyptic number.

It is an amenable number.

961263649 is a deficient number, since it is larger than the sum of its proper divisors (8592991).

961263649 is a wasteful number, since it uses less digits than its factorization.

961263649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16599.

The product of its digits is 419904, while the sum is 46.

The square root of 961263649 is about 31004.2521116056. The cubic root of 961263649 is about 986.9174769593.

The spelling of 961263649 in words is "nine hundred sixty-one million, two hundred sixty-three thousand, six hundred forty-nine".