61651350 has 72 divisors (see below), whose sum is σ = 175401720. Its totient is φ = 15471360.

The previous prime is 61651313. The next prime is 61651391. The reversal of 61651350 is 5315616.

It is a happy number.

61651350 is a `hidden beast` number, since 6 + 1 + 651 + 3 + 5 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3621 + ... + 11679.

It is an arithmetic number, because the mean of its divisors is an integer number (2436135).

Almost surely, 2^61651350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61651350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87700860).

61651350 is an abundant number, since it is smaller than the sum of its proper divisors (113750370).

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

61651350 is a wasteful number, since it uses less digits than its factorization.

61651350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8094 (or 8086 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 61651350 is about 7851.8373645918. The cubic root of 61651350 is about 395.0458740718.

Adding to 61651350 its reverse (5315616), we get a palindrome (66966966).

It can be divided in two parts, 61651 and 350, that added together give a square (62001 = 249²).

The spelling of 61651350 in words is "sixty-one million, six hundred fifty-one thousand, three hundred fifty".