1506680641 has 8 divisors (see below), whose sum is σ = 1609428744. Its totient is φ = 1405501440.

The previous prime is 1506680633. The next prime is 1506680647. The reversal of 1506680641 is 1460866051.

It can be written as a sum of positive squares in 4 ways, for example, as 2792241 + 1503888400 = 1671^2 + 38780^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1506680641 - 2³ = 1506680633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1506680641.

It is not an unprimeable number, because it can be changed into a prime (1506680647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390240 + ... + 394081.

It is an arithmetic number, because the mean of its divisors is an integer number (201178593).

Almost surely, 2^1506680641 is an apocalyptic number.

It is an amenable number.

1506680641 is a deficient number, since it is larger than the sum of its proper divisors (102748103).

1506680641 is a wasteful number, since it uses less digits than its factorization.

1506680641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784451.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1506680641 is about 38815.9843492343. The cubic root of 1506680641 is about 1146.4111535853.

The spelling of 1506680641 in words is "one billion, five hundred six million, six hundred eighty thousand, six hundred forty-one".