361561620 has 48 divisors (see below), whose sum is σ = 1156998528. Its totient is φ = 82642560.

The previous prime is 361561619. The next prime is 361561639. The reversal of 361561620 is 26165163.

It is a super-3 number, since 3×361561620³ (a number of 27 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 430011 + ... + 430850.

It is an arithmetic number, because the mean of its divisors is an integer number (24104136).

Almost surely, 2^361561620 is an apocalyptic number.

361561620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

361561620 is an abundant number, since it is smaller than the sum of its proper divisors (795436908).

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

361561620 is a wasteful number, since it uses less digits than its factorization.

361561620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860880 (or 860878 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 361561620 is about 19014.7737299185. The cubic root of 361561620 is about 712.4057911759.

The spelling of 361561620 in words is "three hundred sixty-one million, five hundred sixty-one thousand, six hundred twenty".