90270707 has 4 divisors (see below), whose sum is σ = 93383520. Its totient is φ = 87157896.

The previous prime is 90270689. The next prime is 90270709. The reversal of 90270707 is 70707209.

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

It is a cyclic number.

It is not a de Polignac number, because 90270707 - 2⁸ = 90270451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90270709) 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, 1556363 + ... + 1556420.

It is an arithmetic number, because the mean of its divisors is an integer number (23345880).

Almost surely, 2^90270707 is an apocalyptic number.

90270707 is a deficient number, since it is larger than the sum of its proper divisors (3112813).

90270707 is a wasteful number, since it uses less digits than its factorization.

90270707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112812.

The product of its (nonzero) digits is 6174, while the sum is 32.

The square root of 90270707 is about 9501.0897795990. The cubic root of 90270707 is about 448.5893388553.

The spelling of 90270707 in words is "ninety million, two hundred seventy thousand, seven hundred seven".