61416220 has 24 divisors (see below), whose sum is σ = 130901904. Its totient is φ = 24199296.

The previous prime is 61416217. The next prime is 61416269. The reversal of 61416220 is 2261416.

61416220 = T₄₇ + T₄₈ + ... + T₇₁₆.

It is a junction number, because it is equal to n+sod(n) for n = 61416191 and 61416200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21577 + ... + 24256.

It is an arithmetic number, because the mean of its divisors is an integer number (5454246).

Almost surely, 2^61416220 is an apocalyptic number.

It is an amenable number.

61416220 is an abundant number, since it is smaller than the sum of its proper divisors (69485684).

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

61416220 is a wasteful number, since it uses less digits than its factorization.

61416220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45909 (or 45907 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 61416220 is about 7836.8501325469. The cubic root of 61416220 is about 394.5430168833.

Adding to 61416220 its reverse (2261416), we get a palindrome (63677636).

The spelling of 61416220 in words is "sixty-one million, four hundred sixteen thousand, two hundred twenty".