615901 has 16 divisors (see below), whose sum is σ = 745920. Its totient is φ = 501120.

The previous prime is 615887. The next prime is 615907. The reversal of 615901 is 109516.

It is a cyclic number.

It is not a de Polignac number, because 615901 - 2⁵ = 615869 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 (615907) 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, 8401 + ... + 8473.

It is an arithmetic number, because the mean of its divisors is an integer number (46620).

2⁶¹⁵⁹⁰¹ is an apocalyptic number.

It is an amenable number.

615901 is a deficient number, since it is larger than the sum of its proper divisors (130019).

615901 is a wasteful number, since it uses less digits than its factorization.

615901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 615901 is about 784.7936034398. The cubic root of 615901 is about 85.0818588572.

The spelling of 615901 in words is "six hundred fifteen thousand, nine hundred one".