97699456 has 32 divisors (see below), whose sum is σ = 195757380. Its totient is φ = 48568320.

The previous prime is 97699451. The next prime is 97699489. The reversal of 97699456 is 65499679.

97699456 = T₈₀₆₉ + T₈₀₇₀ + T₈₀₇₁.

It can be written as a sum of positive squares in 2 ways, for example, as 96353856 + 1345600 = 9816^2 + 1160^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 97699397 and 97699406.

It is not an unprimeable number, because it can be changed into a prime (97699451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21060 + ... + 25276.

Almost surely, 2^97699456 is an apocalyptic number.

97699456 is the 8071-st centered triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97699456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97878690).

97699456 is an abundant number, since it is smaller than the sum of its proper divisors (98057924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97699456 is a wasteful number, since it uses less digits than its factorization.

97699456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4412 (or 4400 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 55.

The square root of 97699456 is about 9884.3035161816. The cubic root of 97699456 is about 460.5718408166.

The spelling of 97699456 in words is "ninety-seven million, six hundred ninety-nine thousand, four hundred fifty-six".