601620157 has 8 divisors (see below), whose sum is σ = 639281592. Its totient is φ = 564211200.

The previous prime is 601620139. The next prime is 601620169. The reversal of 601620157 is 751026106.

It can be written as a sum of positive squares in 4 ways, for example, as 399440196 + 202179961 = 19986^2 + 14219^2 .

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 601620157 - 2²³ = 593231549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601620197) 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, 58194 + ... + 67747.

It is an arithmetic number, because the mean of its divisors is an integer number (79910199).

Almost surely, 2^601620157 is an apocalyptic number.

It is an amenable number.

601620157 is a deficient number, since it is larger than the sum of its proper divisors (37661435).

601620157 is a wasteful number, since it uses less digits than its factorization.

601620157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126239.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 601620157 is about 24527.9464488978. The cubic root of 601620157 is about 844.1911459769.

The spelling of 601620157 in words is "six hundred one million, six hundred twenty thousand, one hundred fifty-seven".