72090701 has 4 divisors (see below), whose sum is σ = 72117600. Its totient is φ = 72063804.

The previous prime is 72090679. The next prime is 72090709. The reversal of 72090701 is 10709027.

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.

It is a cyclic number.

It is not a de Polignac number, because 72090701 - 2²² = 67896397 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 (72090709) 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, 8921 + ... + 14958.

It is an arithmetic number, because the mean of its divisors is an integer number (18029400).

Almost surely, 2^72090701 is an apocalyptic number.

It is an amenable number.

72090701 is a deficient number, since it is larger than the sum of its proper divisors (26899).

72090701 is a wasteful number, since it uses less digits than its factorization.

72090701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26898.

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

The square root of 72090701 is about 8490.6242997791. The cubic root of 72090701 is about 416.1913817541.

Adding to 72090701 its reverse (10709027), we get a palindrome (82799728).

The spelling of 72090701 in words is "seventy-two million, ninety thousand, seven hundred one".