90781106 has 8 divisors (see below), whose sum is σ = 146646444. Its totient is φ = 41898960.

The previous prime is 90781087. The next prime is 90781109. The reversal of 90781106 is 60118709.

It can be written as a sum of positive squares in 2 ways, for example, as 65691025 + 25090081 = 8105^2 + 5009^2 .

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 (90781109) 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, 1745765 + ... + 1745816.

Almost surely, 2^90781106 is an apocalyptic number.

90781106 is a deficient number, since it is larger than the sum of its proper divisors (55865338).

90781106 is a wasteful number, since it uses less digits than its factorization.

90781106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491596.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 90781106 is about 9527.9119433378. The cubic root of 90781106 is about 449.4332057397.

The spelling of 90781106 in words is "ninety million, seven hundred eighty-one thousand, one hundred six".