520061644 has 6 divisors (see below), whose sum is σ = 910107884. Its totient is φ = 260030820.

The previous prime is 520061609. The next prime is 520061653. The reversal of 520061644 is 446160025.

It is a super-3 number, since 3×520061644³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65007702 + ... + 65007709.

Almost surely, 2^520061644 is an apocalyptic number.

It is an amenable number.

520061644 is a deficient number, since it is larger than the sum of its proper divisors (390046240).

520061644 is a wasteful number, since it uses less digits than its factorization.

520061644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130015415 (or 130015413 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 520061644 is about 22804.8600960409. The cubic root of 520061644 is about 804.1769265672.

The spelling of 520061644 in words is "five hundred twenty million, sixty-one thousand, six hundred forty-four".