1020761 has 4 divisors (see below), whose sum is σ = 1166592. Its totient is φ = 874932.

The previous prime is 1020757. The next prime is 1020779. The reversal of 1020761 is 1670201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1670201 = 13 ⋅128477.

It is a cyclic number.

It is not a de Polignac number, because 1020761 - 2² = 1020757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72905 + ... + 72918.

It is an arithmetic number, because the mean of its divisors is an integer number (291648).

2^1020761 is an apocalyptic number.

It is an amenable number.

1020761 is a deficient number, since it is larger than the sum of its proper divisors (145831).

1020761 is an equidigital number, since it uses as much as digits as its factorization.

1020761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145830.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1020761 is about 1010.3271747310. The cubic root of 1020761 is about 100.6872987159.

Adding to 1020761 its reverse (1670201), we get a palindrome (2690962).

The spelling of 1020761 in words is "one million, twenty thousand, seven hundred sixty-one".