97810906 has 8 divisors (see below), whose sum is σ = 150681780. Its totient is φ = 47583648.

The previous prime is 97810903. The next prime is 97810919. The reversal of 97810906 is 60901879.

It can be written as a sum of positive squares in 2 ways, for example, as 96727225 + 1083681 = 9835^2 + 1041^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (97810903) 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, 660811 + ... + 660958.

Almost surely, 2^97810906 is an apocalyptic number.

97810906 is a deficient number, since it is larger than the sum of its proper divisors (52870874).

97810906 is a wasteful number, since it uses less digits than its factorization.

97810906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321808.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 97810906 is about 9889.9396358117. The cubic root of 97810906 is about 460.7469056795.

The spelling of 97810906 in words is "ninety-seven million, eight hundred ten thousand, nine hundred six".