97906851 has 18 divisors (see below), whose sum is σ = 164510892. Its totient is φ = 55946520.

The previous prime is 97906849. The next prime is 97906877. The reversal of 97906851 is 15860979.

It is not a de Polignac number, because 97906851 - 2¹ = 97906849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97906797 and 97906806.

It is not an unprimeable number, because it can be changed into a prime (97906801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 110565 + ... + 111446.

It is an arithmetic number, because the mean of its divisors is an integer number (9139494).

Almost surely, 2^97906851 is an apocalyptic number.

97906851 is a deficient number, since it is larger than the sum of its proper divisors (66604041).

97906851 is a wasteful number, since it uses less digits than its factorization.

97906851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222031 (or 222021 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 97906851 is about 9894.7890831488. The cubic root of 97906851 is about 460.8975089104.

It can be divided in two parts, 9790 and 6851, that added together give a square (16641 = 129²).

The spelling of 97906851 in words is "ninety-seven million, nine hundred six thousand, eight hundred fifty-one".