61992000 has 448 divisors, whose sum is σ = 266273280. Its totient is φ = 13824000.

The previous prime is 61991987. The next prime is 61992001. The reversal of 61992000 is 29916.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (448).

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 (61992001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1511980 + ... + 1512020.

It is an arithmetic number, because the mean of its divisors is an integer number (594360).

Almost surely, 2^61992000 is an apocalyptic number.

61992000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61992000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133136640).

61992000 is an abundant number, since it is smaller than the sum of its proper divisors (204281280).

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

61992000 is a wasteful number, since it uses less digits than its factorization.

61992000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 61992000 is about 7873.4998571156. The cubic root of 61992000 is about 395.7721370461.

The spelling of 61992000 in words is "sixty-one million, nine hundred ninety-two thousand".