7276991 has 4 divisors (see below), whose sum is σ = 7290984. Its totient is φ = 7263000.

The previous prime is 7276987. The next prime is 7277009. The reversal of 7276991 is 1996727.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1996727 = 107 ⋅18661.

It is a cyclic number.

It is not a de Polignac number, because 7276991 - 2² = 7276987 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 (7276931) 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, 6185 + ... + 7266.

It is an arithmetic number, because the mean of its divisors is an integer number (1822746).

Almost surely, 2^7276991 is an apocalyptic number.

7276991 is a deficient number, since it is larger than the sum of its proper divisors (13993).

7276991 is a wasteful number, since it uses less digits than its factorization.

7276991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13992.

The product of its digits is 47628, while the sum is 41.

The square root of 7276991 is about 2697.5898502182. The cubic root of 7276991 is about 193.7837158113.

The spelling of 7276991 in words is "seven million, two hundred seventy-six thousand, nine hundred ninety-one".