1007780506 has 4 divisors (see below), whose sum is σ = 1511670762. Its totient is φ = 503890252.

The previous prime is 1007780503. The next prime is 1007780591. The reversal of 1007780506 is 6050877001.

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

It can be written as a sum of positive squares in only one way, i.e., 533194281 + 474586225 = 23091^2 + 21785^2 .

It is not an unprimeable number, because it can be changed into a prime (1007780503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251945125 + ... + 251945128.

Almost surely, 2^1007780506 is an apocalyptic number.

1007780506 is a deficient number, since it is larger than the sum of its proper divisors (503890256).

1007780506 is an equidigital number, since it uses as much as digits as its factorization.

1007780506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503890255.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 1007780506 is about 31745.5588389935. The cubic root of 1007780506 is about 1002.5868046717.

The spelling of 1007780506 in words is "one billion, seven million, seven hundred eighty thousand, five hundred six".