97906738 has 4 divisors (see below), whose sum is σ = 146860110. Its totient is φ = 48953368.

The previous prime is 97906733. The next prime is 97906771. The reversal of 97906738 is 83760979.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72029169 + 25877569 = 8487^2 + 5087^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 97906691 and 97906700.

It is not an unprimeable number, because it can be changed into a prime (97906733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24476683 + ... + 24476686.

Almost surely, 2^97906738 is an apocalyptic number.

97906738 is a deficient number, since it is larger than the sum of its proper divisors (48953372).

97906738 is a wasteful number, since it uses less digits than its factorization.

97906738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48953371.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 97906738 is about 9894.7833730709. The cubic root of 97906738 is about 460.8973315941.

The spelling of 97906738 in words is "ninety-seven million, nine hundred six thousand, seven hundred thirty-eight".