97766623 has 4 divisors (see below), whose sum is σ = 98470120. Its totient is φ = 97063128.

The previous prime is 97766621. The next prime is 97766633. The reversal of 97766623 is 32666779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32666779 = 107 ⋅305297.

It is a cyclic number.

It is not a de Polignac number, because 97766623 - 2¹ = 97766621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97766621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351540 + ... + 351817.

It is an arithmetic number, because the mean of its divisors is an integer number (24617530).

Almost surely, 2^97766623 is an apocalyptic number.

97766623 is a deficient number, since it is larger than the sum of its proper divisors (703497).

97766623 is a wasteful number, since it uses less digits than its factorization.

97766623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703496.

The product of its digits is 571536, while the sum is 46.

The square root of 97766623 is about 9887.7005921498. The cubic root of 97766623 is about 460.6773621901.

It can be divided in two parts, 97766 and 623, that added together give a palindrome (98389).

The spelling of 97766623 in words is "ninety-seven million, seven hundred sixty-six thousand, six hundred twenty-three".