360021645 has 64 divisors (see below), whose sum is σ = 682352640. Its totient is φ = 179682624.

The previous prime is 360021601. The next prime is 360021647. The reversal of 360021645 is 546120063.

360021645 is a `hidden beast` number, since 3 + 600 + 2 + 16 + 45 = 666.

It is not a de Polignac number, because 360021645 - 2¹⁰ = 360020621 is a prime.

It is a super-3 number, since 3×360021645³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

360021645 is a modest number, since divided by 21645 gives 360 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (360021647) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 144702 + ... + 147168.

It is an arithmetic number, because the mean of its divisors is an integer number (10661760).

Almost surely, 2^360021645 is an apocalyptic number.

It is an amenable number.

360021645 is a deficient number, since it is larger than the sum of its proper divisors (322330995).

360021645 is a wasteful number, since it uses less digits than its factorization.

360021645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 360021645 is about 18974.2363482697. The cubic root of 360021645 is about 711.3929178263.

The spelling of 360021645 in words is "three hundred sixty million, twenty-one thousand, six hundred forty-five".