90647743 has 4 divisors (see below), whose sum is σ = 93097720. Its totient is φ = 88197768.

The previous prime is 90647737. The next prime is 90647747. The reversal of 90647743 is 34774609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34774609 = 5897².

It is a cyclic number.

It is not a de Polignac number, because 90647743 - 2⁹ = 90647231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90647696 and 90647705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90647747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1224933 + ... + 1225006.

It is an arithmetic number, because the mean of its divisors is an integer number (23274430).

Almost surely, 2^90647743 is an apocalyptic number.

90647743 is a deficient number, since it is larger than the sum of its proper divisors (2449977).

90647743 is a wasteful number, since it uses less digits than its factorization.

90647743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449976.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 90647743 is about 9520.9108282769. The cubic root of 90647743 is about 449.2130162532.

It can be divided in two parts, 9064 and 7743, that added together give a 5-th power (16807 = 7⁵).

The spelling of 90647743 in words is "ninety million, six hundred forty-seven thousand, seven hundred forty-three".