61963520 has 36 divisors (see below), whose sum is σ = 148425060. Its totient is φ = 24784896.

The previous prime is 61963501. The next prime is 61963523. The reversal of 61963520 is 2536916.

It is a happy number.

61963520 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 2 ways, for example, as 48888064 + 13075456 = 6992^2 + 3616^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61963523) 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, 22925 + ... + 25484.

Almost surely, 2^61963520 is an apocalyptic number.

It is an amenable number.

61963520 is an abundant number, since it is smaller than the sum of its proper divisors (86461540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61963520 is an equidigital number, since it uses as much as digits as its factorization.

61963520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48430 (or 48416 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 61963520 is about 7871.6910508480. The cubic root of 61963520 is about 395.7115199933.

The spelling of 61963520 in words is "sixty-one million, nine hundred sixty-three thousand, five hundred twenty".