99620613 has 24 divisors (see below), whose sum is σ = 154222848. Its totient is φ = 61804512.

The previous prime is 99620593. The next prime is 99620623. The reversal of 99620613 is 31602699.

It is not a de Polignac number, because 99620613 - 2¹⁰ = 99619589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99620623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1156 + ... + 14162.

It is an arithmetic number, because the mean of its divisors is an integer number (6425952).

Almost surely, 2^99620613 is an apocalyptic number.

It is an amenable number.

99620613 is a deficient number, since it is larger than the sum of its proper divisors (54602235).

99620613 is a wasteful number, since it uses less digits than its factorization.

99620613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13073 (or 13070 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 99620613 is about 9981.0126239776. The cubic root of 99620613 is about 463.5711533221.

It can be divided in two parts, 996 and 20613, that added together give a square (21609 = 147²).

The spelling of 99620613 in words is "ninety-nine million, six hundred twenty thousand, six hundred thirteen".