6240999961 has 8 divisors (see below), whose sum is σ = 7155361664. Its totient is φ = 5332335840.

The previous prime is 6240999953. The next prime is 6240999971. The reversal of 6240999961 is 1699990426.

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 6240999961 - 2³ = 6240999953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6240999971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422045 + ... + 1426426.

It is an arithmetic number, because the mean of its divisors is an integer number (894420208).

Almost surely, 2^6240999961 is an apocalyptic number.

It is an amenable number.

6240999961 is a deficient number, since it is larger than the sum of its proper divisors (914361703).

6240999961 is a wasteful number, since it uses less digits than its factorization.

6240999961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848791.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The square root of 6240999961 is about 78999.9997531646. Note that the first 3 decimals coincide. The cubic root of 6240999961 is about 1841.1311531852.

The spelling of 6240999961 in words is "six billion, two hundred forty million, nine hundred ninety-nine thousand, nine hundred sixty-one".