63620613 has 32 divisors (see below), whose sum is σ = 114059520. Its totient is φ = 34214400.

The previous prime is 63620593. The next prime is 63620629. The reversal of 63620613 is 31602636.

63620613 is a `hidden beast` number, since 636 + 20 + 6 + 1 + 3 = 666.

It is not a de Polignac number, because 63620613 - 2¹⁷ = 63489541 is a prime.

It is a super-3 number, since 3×63620613³ (a number of 24 digits) contains 333 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63620653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6688 + ... + 13113.

It is an arithmetic number, because the mean of its divisors is an integer number (3564360).

Almost surely, 2^63620613 is an apocalyptic number.

63620613 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

63620613 is a deficient number, since it is larger than the sum of its proper divisors (50438907).

63620613 is a wasteful number, since it uses less digits than its factorization.

63620613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19834 (or 19828 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 63620613 is about 7976.2530677004. The cubic root of 63620613 is about 399.2080434636.

The spelling of 63620613 in words is "sixty-three million, six hundred twenty thousand, six hundred thirteen".