90620613 has 10 divisors (see below), whose sum is σ = 135371654. Its totient is φ = 60413688.

The previous prime is 90620611. The next prime is 90620617. The reversal of 90620613 is 31602609.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78110244 + 12510369 = 8838^2 + 3537^2 .

It is not a de Polignac number, because 90620613 - 2¹ = 90620611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90620611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 559306 + ... + 559467.

Almost surely, 2^90620613 is an apocalyptic number.

It is an amenable number.

90620613 is a deficient number, since it is larger than the sum of its proper divisors (44751041).

90620613 is a wasteful number, since it uses less digits than its factorization.

90620613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118785 (or 1118776 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 90620613 is about 9519.4859630129. The cubic root of 90620613 is about 449.1681967325.

The spelling of 90620613 in words is "ninety million, six hundred twenty thousand, six hundred thirteen".