1020500761 has 16 divisors (see below), whose sum is σ = 1177069824. Its totient is φ = 866663424.

The previous prime is 1020500759. The next prime is 1020500791. The reversal of 1020500761 is 1670050201.

It is a cyclic number.

It is not a de Polignac number, because 1020500761 - 2¹ = 1020500759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020500711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411421 + ... + 413893.

It is an arithmetic number, because the mean of its divisors is an integer number (73566864).

Almost surely, 2^1020500761 is an apocalyptic number.

It is an amenable number.

1020500761 is a deficient number, since it is larger than the sum of its proper divisors (156569063).

1020500761 is a wasteful number, since it uses less digits than its factorization.

1020500761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1020500761 is about 31945.2776009225. The cubic root of 1020500761 is about 1006.7874137844.

Adding to 1020500761 its reverse (1670050201), we get a palindrome (2690550962).

The spelling of 1020500761 in words is "one billion, twenty million, five hundred thousand, seven hundred sixty-one".