2629745 has 4 divisors (see below), whose sum is σ = 3155700. Its totient is φ = 2103792.

The previous prime is 2629729. The next prime is 2629763. The reversal of 2629745 is 5479262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5479262 = 2 ⋅2739631.

It can be written as a sum of positive squares in 2 ways, for example, as 2050624 + 579121 = 1432^2 + 761^2 .

It is a cyclic number.

It is not a de Polignac number, because 2629745 - 2⁴ = 2629729 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 6² + 2²¹ + 9⁶ + 7³ + 4⁴ + 5 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262970 + ... + 262979.

It is an arithmetic number, because the mean of its divisors is an integer number (788925).

2^2629745 is an apocalyptic number.

It is an amenable number.

2629745 is a deficient number, since it is larger than the sum of its proper divisors (525955).

2629745 is an equidigital number, since it uses as much as digits as its factorization.

2629745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525954.

The product of its digits is 30240, while the sum is 35.

The square root of 2629745 is about 1621.6488522488. The cubic root of 2629745 is about 138.0292768522.

The spelling of 2629745 in words is "two million, six hundred twenty-nine thousand, seven hundred forty-five".