601091091 has 16 divisors (see below), whose sum is σ = 921213600. Its totient is φ = 386908704.

The previous prime is 601091089. The next prime is 601091093. The reversal of 601091091 is 190190106.

It is an interprime number because it is at equal distance from previous prime (601091089) and next prime (601091093).

It is not a de Polignac number, because 601091091 - 2¹ = 601091089 is a prime.

It is a super-2 number, since 2×601091091² = 722620999359140562, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (601091093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383056 + ... + 384621.

It is an arithmetic number, because the mean of its divisors is an integer number (57575850).

Almost surely, 2^601091091 is an apocalyptic number.

601091091 is a deficient number, since it is larger than the sum of its proper divisors (320122509).

601091091 is a wasteful number, since it uses less digits than its factorization.

601091091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767715 (or 767709 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 601091091 is about 24517.1591135678. The cubic root of 601091091 is about 843.9436122605.

The spelling of 601091091 in words is "six hundred one million, ninety-one thousand, ninety-one".