997401707 has 2 divisors, whose sum is σ = 997401708. Its totient is φ = 997401706.

The previous prime is 997401649. The next prime is 997401721. The reversal of 997401707 is 707104799.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (707104799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997401707 - 2²⁶ = 930292843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (997401737) 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 as a sum of consecutive naturals, namely, 498700853 + 498700854.

It is an arithmetic number, because the mean of its divisors is an integer number (498700854).

Almost surely, 2^997401707 is an apocalyptic number.

997401707 is a deficient number, since it is larger than the sum of its proper divisors (1).

997401707 is an equidigital number, since it uses as much as digits as its factorization.

997401707 is an odious number, because the sum of its binary digits is odd.

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

The square root of 997401707 is about 31581.6672612451. The cubic root of 997401707 is about 999.1331511235.

The spelling of 997401707 in words is "nine hundred ninety-seven million, four hundred one thousand, seven hundred seven".