61373420 has 48 divisors (see below), whose sum is σ = 136345440. Its totient is φ = 23141376.

The previous prime is 61373413. The next prime is 61373423. The reversal of 61373420 is 2437316.

It is a self number, because there is not a number n which added to its sum of digits gives 61373420.

It is not an unprimeable number, because it can be changed into a prime (61373423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141524 + ... + 141956.

It is an arithmetic number, because the mean of its divisors is an integer number (2840530).

Almost surely, 2^61373420 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 61373420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68172720).

61373420 is an abundant number, since it is smaller than the sum of its proper divisors (74972020).

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

61373420 is a wasteful number, since it uses less digits than its factorization.

61373420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 61373420 is about 7834.1189676951. The cubic root of 61373420 is about 394.4513453060.

The spelling of 61373420 in words is "sixty-one million, three hundred seventy-three thousand, four hundred twenty".