601221646 has 4 divisors (see below), whose sum is σ = 901832472. Its totient is φ = 300610822.

The previous prime is 601221641. The next prime is 601221653. The reversal of 601221646 is 646122106.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×601221646² = 722934935237898632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601221641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150305410 + ... + 150305413.

It is an arithmetic number, because the mean of its divisors is an integer number (225458118).

Almost surely, 2^601221646 is an apocalyptic number.

601221646 is a deficient number, since it is larger than the sum of its proper divisors (300610826).

601221646 is a wasteful number, since it uses less digits than its factorization.

601221646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300610825.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 601221646 is about 24519.8214920093. The cubic root of 601221646 is about 844.0047084259.

The spelling of 601221646 in words is "six hundred one million, two hundred twenty-one thousand, six hundred forty-six".