97626981 has 4 divisors (see below), whose sum is σ = 130169312. Its totient is φ = 65084652.

The previous prime is 97626961. The next prime is 97627001. The reversal of 97626981 is 18962679.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18962679 = 3 ⋅6320893.

It is an interprime number because it is at equal distance from previous prime (97626961) and next prime (97627001).

It is not a de Polignac number, because 97626981 - 2⁷ = 97626853 is a prime.

It is a super-2 number, since 2×97626981² = 19062054838348722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 97626981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97626961) 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, 16271161 + ... + 16271166.

It is an arithmetic number, because the mean of its divisors is an integer number (32542328).

Almost surely, 2^97626981 is an apocalyptic number.

It is an amenable number.

97626981 is a deficient number, since it is larger than the sum of its proper divisors (32542331).

97626981 is a wasteful number, since it uses less digits than its factorization.

97626981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32542330.

The product of its digits is 326592, while the sum is 48.

The square root of 97626981 is about 9880.6366697698. The cubic root of 97626981 is about 460.4579261547.

The spelling of 97626981 in words is "ninety-seven million, six hundred twenty-six thousand, nine hundred eighty-one".