2907997 has 2 divisors, whose sum is σ = 2907998. Its totient is φ = 2907996.

The previous prime is 2907979. The next prime is 2908013. The reversal of 2907997 is 7997092.

Together with previous prime (2907979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2114116 + 793881 = 1454^2 + 891^2 .

It is a cyclic number.

It is not a de Polignac number, because 2907997 - 2⁷ = 2907869 is a prime.

2907997 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2907907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1453998 + 1453999.

It is an arithmetic number, because the mean of its divisors is an integer number (1453999).

2^2907997 is an apocalyptic number.

It is an amenable number.

2907997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2907997 is an equidigital number, since it uses as much as digits as its factorization.

2907997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 2907997 is about 1705.2850201653. The cubic root of 2907997 is about 142.7352756397.

The spelling of 2907997 in words is "two million, nine hundred seven thousand, nine hundred ninety-seven".