501685730 has 64 divisors (see below), whose sum is σ = 1137362688. Its totient is φ = 155070720.

The previous prime is 501685727. The next prime is 501685753. The reversal of 501685730 is 37586105.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 32720 + ... + 45540.

It is an arithmetic number, because the mean of its divisors is an integer number (17771292).

Almost surely, 2^501685730 is an apocalyptic number.

501685730 is an abundant number, since it is smaller than the sum of its proper divisors (635676958).

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

501685730 is a wasteful number, since it uses less digits than its factorization.

501685730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12891.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 501685730 is about 22398.3421261485. The cubic root of 501685730 is about 794.5915019615.

The spelling of 501685730 in words is "five hundred one million, six hundred eighty-five thousand, seven hundred thirty".