61366420 has 24 divisors (see below), whose sum is σ = 129024000. Its totient is φ = 24517152.

The previous prime is 61366411. The next prime is 61366429. The reversal of 61366420 is 2466316.

It is an interprime number because it is at equal distance from previous prime (61366411) and next prime (61366429).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61366429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24381 + ... + 26779.

It is an arithmetic number, because the mean of its divisors is an integer number (5376000).

Almost surely, 2^61366420 is an apocalyptic number.

It is an amenable number.

61366420 is an abundant number, since it is smaller than the sum of its proper divisors (67657580).

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

61366420 is a wasteful number, since it uses less digits than its factorization.

61366420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687 (or 3685 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 61366420 is about 7833.6721912523. The cubic root of 61366420 is about 394.4363482362.

The spelling of 61366420 in words is "sixty-one million, three hundred sixty-six thousand, four hundred twenty".