61876620 has 144 divisors (see below), whose sum is σ = 208895232. Its totient is φ = 14722560.

The previous prime is 61876523. The next prime is 61876621. The reversal of 61876620 is 2667816.

It is a happy number.

It is a super-2 number, since 2×61876620² = 7657432205248800, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (61876621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72114 + ... + 72966.

Almost surely, 2^61876620 is an apocalyptic number.

61876620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61876620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104447616).

61876620 is an abundant number, since it is smaller than the sum of its proper divisors (147018612).

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

61876620 is a wasteful number, since it uses less digits than its factorization.

61876620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 61876620 is about 7866.1693345618. The cubic root of 61876620 is about 395.5264464802.

The spelling of 61876620 in words is "sixty-one million, eight hundred seventy-six thousand, six hundred twenty".