7147997 has 2 divisors, whose sum is σ = 7147998. Its totient is φ = 7147996.

The previous prime is 7147991. The next prime is 7148023. The reversal of 7147997 is 7997417.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3976036 + 3171961 = 1994^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 7147997 - 2¹⁰ = 7146973 is a prime.

It is a super-2 number, since 2×7147997² = 102187722224018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7147991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3573998 + 3573999.

It is an arithmetic number, because the mean of its divisors is an integer number (3573999).

Almost surely, 2^7147997 is an apocalyptic number.

It is an amenable number.

7147997 is a deficient number, since it is larger than the sum of its proper divisors (1).

7147997 is an equidigital number, since it uses as much as digits as its factorization.

7147997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 44.

The square root of 7147997 is about 2673.5738254254. The cubic root of 7147997 is about 192.6318610807.

The spelling of 7147997 in words is "seven million, one hundred forty-seven thousand, nine hundred ninety-seven".