90726061 has 4 divisors (see below), whose sum is σ = 91304092. Its totient is φ = 90148032.

The previous prime is 90726037. The next prime is 90726067. The reversal of 90726061 is 16062709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16062709 = 13 ⋅1235593.

It can be written as a sum of positive squares in 2 ways, for example, as 7733961 + 82992100 = 2781^2 + 9110^2 .

It is a cyclic number.

It is not a de Polignac number, because 90726061 - 2⁵ = 90726029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90726067) 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, 288780 + ... + 289093.

It is an arithmetic number, because the mean of its divisors is an integer number (22826023).

Almost surely, 2^90726061 is an apocalyptic number.

It is an amenable number.

90726061 is a deficient number, since it is larger than the sum of its proper divisors (578031).

90726061 is a wasteful number, since it uses less digits than its factorization.

90726061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578030.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 90726061 is about 9525.0228871116. The cubic root of 90726061 is about 449.3423496363.

The spelling of 90726061 in words is "ninety million, seven hundred twenty-six thousand, sixty-one".