61333620 has 96 divisors (see below), whose sum is σ = 183472128. Its totient is φ = 15255552.

The previous prime is 61333619. The next prime is 61333621. The reversal of 61333620 is 2633316.

It is an interprime number because it is at equal distance from previous prime (61333619) and next prime (61333621).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61333621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159949 + ... + 160331.

It is an arithmetic number, because the mean of its divisors is an integer number (1911168).

Almost surely, 2^61333620 is an apocalyptic number.

61333620 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 61333620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91736064).

61333620 is an abundant number, since it is smaller than the sum of its proper divisors (122138508).

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

61333620 is a wasteful number, since it uses less digits than its factorization.

61333620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 61333620 is about 7831.5783849745. The cubic root of 61333620 is about 394.3660610557.

Adding to 61333620 its reverse (2633316), we get a palindrome (63966936).

The spelling of 61333620 in words is "sixty-one million, three hundred thirty-three thousand, six hundred twenty".