61805460 has 24 divisors (see below), whose sum is σ = 173055456. Its totient is φ = 16481440.

The previous prime is 61805449. The next prime is 61805477. The reversal of 61805460 is 6450816.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 514986 + ... + 515105.

It is an arithmetic number, because the mean of its divisors is an integer number (7210644).

Almost surely, 2^61805460 is an apocalyptic number.

61805460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61805460 is an abundant number, since it is smaller than the sum of its proper divisors (111249996).

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

61805460 is a wasteful number, since it uses less digits than its factorization.

61805460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030103 (or 1030101 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 61805460 is about 7861.6448660570. The cubic root of 61805460 is about 395.3747658277.

The spelling of 61805460 in words is "sixty-one million, eight hundred five thousand, four hundred sixty".