97720334 has 4 divisors (see below), whose sum is σ = 146580504. Its totient is φ = 48860166.

The previous prime is 97720333. The next prime is 97720351. The reversal of 97720334 is 43302779.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43302779 = 13 ⋅3330983.

It is a junction number, because it is equal to n+sod(n) for n = 97720294 and 97720303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97720331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24430082 + ... + 24430085.

It is an arithmetic number, because the mean of its divisors is an integer number (36645126).

Almost surely, 2^97720334 is an apocalyptic number.

97720334 is a deficient number, since it is larger than the sum of its proper divisors (48860170).

97720334 is a wasteful number, since it uses less digits than its factorization.

97720334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48860169.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 97720334 is about 9885.3595786901. The cubic root of 97720334 is about 460.6046459601.

The spelling of 97720334 in words is "ninety-seven million, seven hundred twenty thousand, three hundred thirty-four".