615605601 has 8 divisors (see below), whose sum is σ = 883946560. Its totient is φ = 378834192.

The previous prime is 615605579. The next prime is 615605609. The reversal of 615605601 is 106506516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 615605601 - 2⁶ = 615605537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615605609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7892341 + ... + 7892418.

It is an arithmetic number, because the mean of its divisors is an integer number (110493320).

Almost surely, 2^615605601 is an apocalyptic number.

It is an amenable number.

615605601 is a deficient number, since it is larger than the sum of its proper divisors (268340959).

615605601 is a wasteful number, since it uses less digits than its factorization.

615605601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15784775.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 615605601 is about 24811.4006255189. The cubic root of 615605601 is about 850.6825433565.

It can be divided in two parts, 61560 and 5601, that added together give a triangular number (67161 = T₃₆₆).

The spelling of 615605601 in words is "six hundred fifteen million, six hundred five thousand, six hundred one".