61029976 has 64 divisors (see below), whose sum is σ = 141120000. Its totient is φ = 24157440.

The previous prime is 61029961. The next prime is 61029989. The reversal of 61029976 is 67992016.

It is a congruent number.

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, 42925 + ... + 44323.

It is an arithmetic number, because the mean of its divisors is an integer number (2205000).

Almost surely, 2^61029976 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 61029976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70560000).

61029976 is an abundant number, since it is smaller than the sum of its proper divisors (80090024).

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

61029976 is a wasteful number, since it uses less digits than its factorization.

61029976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 61029976 is about 7812.1684569651. The cubic root of 61029976 is about 393.7141888654.

The spelling of 61029976 in words is "sixty-one million, twenty-nine thousand, nine hundred seventy-six".