802545641 has 4 divisors (see below), whose sum is σ = 803174400. Its totient is φ = 801916884.

The previous prime is 802545637. The next prime is 802545649. The reversal of 802545641 is 146545208.

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.

It is a cyclic number.

It is not a de Polignac number, because 802545641 - 2² = 802545637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (802545649) 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, 312461 + ... + 315018.

It is an arithmetic number, because the mean of its divisors is an integer number (200793600).

Almost surely, 2^802545641 is an apocalyptic number.

It is an amenable number.

802545641 is a deficient number, since it is larger than the sum of its proper divisors (628759).

802545641 is a wasteful number, since it uses less digits than its factorization.

802545641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628758.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 802545641 is about 28329.2365057726. The cubic root of 802545641 is about 929.3013757310.

The spelling of 802545641 in words is "eight hundred two million, five hundred forty-five thousand, six hundred forty-one".