61164620 has 48 divisors (see below), whose sum is σ = 143561376. Its totient is φ = 21696000.

The previous prime is 61164617. The next prime is 61164637. The reversal of 61164620 is 2646116.

It is a happy number.

It is a super-2 number, since 2×61164620² = 7482221479488800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61164620.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5630 + ... + 12410.

It is an arithmetic number, because the mean of its divisors is an integer number (2990862).

Almost surely, 2^61164620 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 61164620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71780688).

61164620 is an abundant number, since it is smaller than the sum of its proper divisors (82396756).

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

61164620 is a wasteful number, since it uses less digits than its factorization.

61164620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842 (or 6840 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 61164620 is about 7820.7812908942. The cubic root of 61164620 is about 394.0035128995.

The spelling of 61164620 in words is "sixty-one million, one hundred sixty-four thousand, six hundred twenty".