61996512 has 48 divisors (see below), whose sum is σ = 163153872. Its totient is φ = 20613120.

The previous prime is 61996511. The next prime is 61996513. The reversal of 61996512 is 21569916.

It is an interprime number because it is at equal distance from previous prime (61996511) and next prime (61996513).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×61996512³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61996511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62968 + ... + 63944.

It is an arithmetic number, because the mean of its divisors is an integer number (3399039).

Almost surely, 2^61996512 is an apocalyptic number.

It is an amenable number.

61996512 is an abundant number, since it is smaller than the sum of its proper divisors (101157360).

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

61996512 is a wasteful number, since it uses less digits than its factorization.

61996512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1643 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 61996512 is about 7873.7863826751. The cubic root of 61996512 is about 395.7817387181.

The spelling of 61996512 in words is "sixty-one million, nine hundred ninety-six thousand, five hundred twelve".