641162701 has 8 divisors (see below), whose sum is σ = 682327800. Its totient is φ = 600380928.

The previous prime is 641162699. The next prime is 641162719. The reversal of 641162701 is 107261146.

It can be written as a sum of positive squares in 4 ways, for example, as 172396900 + 468765801 = 13130^2 + 21651^2 .

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 641162701 - 2¹ = 641162699 is a prime.

It is a super-2 number, since 2×641162701² = 822179218307230802, which contains 22 as substring.

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 641162701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641162741) 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, 92376 + ... + 99073.

It is an arithmetic number, because the mean of its divisors is an integer number (85290975).

Almost surely, 2^641162701 is an apocalyptic number.

It is an amenable number.

641162701 is a deficient number, since it is larger than the sum of its proper divisors (41165099).

641162701 is a wasteful number, since it uses less digits than its factorization.

641162701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191663.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 641162701 is about 25321.1907500418. The cubic root of 641162701 is about 862.2954276708.

The spelling of 641162701 in words is "six hundred forty-one million, one hundred sixty-two thousand, seven hundred one".