505661734 has 4 divisors (see below), whose sum is σ = 758492604. Its totient is φ = 252830866.

The previous prime is 505661713. The next prime is 505661743. The reversal of 505661734 is 437166505.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 505661693 and 505661702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126415432 + ... + 126415435.

It is an arithmetic number, because the mean of its divisors is an integer number (189623151).

Almost surely, 2^505661734 is an apocalyptic number.

505661734 is a deficient number, since it is larger than the sum of its proper divisors (252830870).

505661734 is a wasteful number, since it uses less digits than its factorization.

505661734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252830869.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 505661734 is about 22486.9236224078. The cubic root of 505661734 is about 796.6851030865.

The spelling of 505661734 in words is "five hundred five million, six hundred sixty-one thousand, seven hundred thirty-four".