61017948 has 60 divisors (see below), whose sum is σ = 161505960. Its totient is φ = 20085408.

The previous prime is 61017937. The next prime is 61017961. The reversal of 61017948 is 84971016.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25758 + ... + 28026.

It is an arithmetic number, because the mean of its divisors is an integer number (2691766).

Almost surely, 2^61017948 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 61017948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80752980).

61017948 is an abundant number, since it is smaller than the sum of its proper divisors (100488012).

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

61017948 is a wasteful number, since it uses less digits than its factorization.

61017948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 61017948 is about 7811.3985943620. The cubic root of 61017948 is about 393.6883223120.

The spelling of 61017948 in words is "sixty-one million, seventeen thousand, nine hundred forty-eight".