1506649 has 2 divisors, whose sum is σ = 1506650. Its totient is φ = 1506648.

The previous prime is 1506641. The next prime is 1506653. The reversal of 1506649 is 9466051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1140624 + 366025 = 1068^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1506649 - 2³ = 1506641 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1506649.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1506641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 753324 + 753325.

It is an arithmetic number, because the mean of its divisors is an integer number (753325).

2^1506649 is an apocalyptic number.

It is an amenable number.

1506649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1506649 is an equidigital number, since it uses as much as digits as its factorization.

1506649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1506649 is about 1227.4563128682. The cubic root of 1506649 is about 114.6403128472.

The spelling of 1506649 in words is "one million, five hundred six thousand, six hundred forty-nine".