97213679 has 2 divisors, whose sum is σ = 97213680. Its totient is φ = 97213678.

The previous prime is 97213643. The next prime is 97213723. The reversal of 97213679 is 97631279.

It is a happy number.

It is an a-pointer prime, because the next prime (97213723) can be obtained adding 97213679 to its sum of digits (44).

It is a weak prime.

It is an emirp because it is prime and its reverse (97631279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97213679 - 2¹⁶ = 97148143 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 (97213639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48606839 + 48606840.

It is an arithmetic number, because the mean of its divisors is an integer number (48606840).

Almost surely, 2^97213679 is an apocalyptic number.

97213679 is a deficient number, since it is larger than the sum of its proper divisors (1).

97213679 is an equidigital number, since it uses as much as digits as its factorization.

97213679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 44.

The square root of 97213679 is about 9859.6997418786. The cubic root of 97213679 is about 459.8072270391.

The spelling of 97213679 in words is "ninety-seven million, two hundred thirteen thousand, six hundred seventy-nine".