801253634 has 4 divisors (see below), whose sum is σ = 1201880454. Its totient is φ = 400626816.

The previous prime is 801253633. The next prime is 801253637. The reversal of 801253634 is 436352108.

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., 655206409 + 146047225 = 25597^2 + 12085^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 801253634.

It is not an unprimeable number, because it can be changed into a prime (801253631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200313407 + ... + 200313410.

Almost surely, 2^801253634 is an apocalyptic number.

801253634 is a deficient number, since it is larger than the sum of its proper divisors (400626820).

801253634 is a wasteful number, since it uses less digits than its factorization.

801253634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400626819.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 801253634 is about 28306.4238998853. The cubic root of 801253634 is about 928.8024181189.

The spelling of 801253634 in words is "eight hundred one million, two hundred fifty-three thousand, six hundred thirty-four".