61912512 has 98 divisors (see below), whose sum is σ = 184341008. Its totient is φ = 20621952.

The previous prime is 61912511. The next prime is 61912517. The reversal of 61912512 is 21521916.

61912512 is a `hidden beast` number, since 61 + 91 + 2 + 512 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61912511) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 45993 + ... + 47319.

Almost surely, 2^61912512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61912512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92170504).

61912512 is an abundant number, since it is smaller than the sum of its proper divisors (122428496).

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

61912512 is an equidigital number, since it uses as much as digits as its factorization.

61912512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357 (or 1332 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 61912512 is about 7868.4504192376. The cubic root of 61912512 is about 395.6029077307.

It can be divided in two parts, 619 and 12512, that added together give a palindrome (13131).

The spelling of 61912512 in words is "sixty-one million, nine hundred twelve thousand, five hundred twelve".