7601991 has 8 divisors (see below), whose sum is σ = 10189824. Its totient is φ = 5041080.

The previous prime is 7601989. The next prime is 7602011. The reversal of 7601991 is 1991067.

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

It is not a de Polignac number, because 7601991 - 2¹ = 7601989 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7601791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6061 + ... + 7206.

It is an arithmetic number, because the mean of its divisors is an integer number (1273728).

Almost surely, 2^7601991 is an apocalyptic number.

7601991 is a deficient number, since it is larger than the sum of its proper divisors (2587833).

7601991 is a wasteful number, since it uses less digits than its factorization.

7601991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13461.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 7601991 is about 2757.1708325746. The cubic root of 7601991 is about 196.6266818389.

The spelling of 7601991 in words is "seven million, six hundred one thousand, nine hundred ninety-one".