61813310 has 64 divisors (see below), whose sum is σ = 125483904. Its totient is φ = 21772800.

The previous prime is 61813303. The next prime is 61813321. The reversal of 61813310 is 1331816.

It is a super-2 number, since 2×61813310² = 7641770586312200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341420 + ... + 341600.

It is an arithmetic number, because the mean of its divisors is an integer number (1960686).

Almost surely, 2^61813310 is an apocalyptic number.

61813310 is an abundant number, since it is smaller than the sum of its proper divisors (63670594).

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

61813310 is a wasteful number, since it uses less digits than its factorization.

61813310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 61813310 is about 7862.1441095925. The cubic root of 61813310 is about 395.3915041575.

The spelling of 61813310 in words is "sixty-one million, eight hundred thirteen thousand, three hundred ten".