90072701 has 4 divisors (see below), whose sum is σ = 92978304. Its totient is φ = 87167100.

The previous prime is 90072691. The next prime is 90072733. The reversal of 90072701 is 10727009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10727009 = 461 ⋅23269.

It is a cyclic number.

It is not a de Polignac number, because 90072701 - 2¹⁰ = 90071677 is a prime.

It is a super-2 number, since 2×90072701² = 16226182930870802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90072781) 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, 1452755 + ... + 1452816.

It is an arithmetic number, because the mean of its divisors is an integer number (23244576).

Almost surely, 2^90072701 is an apocalyptic number.

It is an amenable number.

90072701 is a deficient number, since it is larger than the sum of its proper divisors (2905603).

90072701 is a wasteful number, since it uses less digits than its factorization.

90072701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905602.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 90072701 is about 9490.6638861568. The cubic root of 90072701 is about 448.2611098110.

The spelling of 90072701 in words is "ninety million, seventy-two thousand, seven hundred one".