86737997 has 2 divisors, whose sum is σ = 86737998. Its totient is φ = 86737996.

The previous prime is 86737967. The next prime is 86738011. The reversal of 86737997 is 79973768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51466276 + 35271721 = 7174^2 + 5939^2 .

It is a cyclic number.

It is not a de Polignac number, because 86737997 - 2⁶ = 86737933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86737967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43368998 + 43368999.

It is an arithmetic number, because the mean of its divisors is an integer number (43368999).

Almost surely, 2^86737997 is an apocalyptic number.

It is an amenable number.

86737997 is a deficient number, since it is larger than the sum of its proper divisors (1).

86737997 is an equidigital number, since it uses as much as digits as its factorization.

86737997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000752, while the sum is 56.

The square root of 86737997 is about 9313.3236280074. The cubic root of 86737997 is about 442.6595073292.

The spelling of 86737997 in words is "eighty-six million, seven hundred thirty-seven thousand, nine hundred ninety-seven".