61793970 has 64 divisors (see below), whose sum is σ = 173650176. Its totient is φ = 13777920.

The previous prime is 61793957. The next prime is 61793981. The reversal of 61793970 is 7939716.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5022 + ... + 12198.

It is an arithmetic number, because the mean of its divisors is an integer number (2713284).

Almost surely, 2^61793970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61793970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86825088).

61793970 is an abundant number, since it is smaller than the sum of its proper divisors (111856206).

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

61793970 is a wasteful number, since it uses less digits than its factorization.

61793970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7235.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 61793970 is about 7860.9140689871. The cubic root of 61793970 is about 395.3502634746.

The spelling of 61793970 in words is "sixty-one million, seven hundred ninety-three thousand, nine hundred seventy".