612101601 has 6 divisors (see below), whose sum is σ = 884146770. Its totient is φ = 408067728.

The previous prime is 612101573. The next prime is 612101617. The reversal of 612101601 is 106101216.

612101601 is a `hidden beast` number, since 61 + 2 + 1 + 0 + 1 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 531533025 + 80568576 = 23055^2 + 8976^2 .

It is not a de Polignac number, because 612101601 - 2⁶ = 612101537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612101801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34005636 + ... + 34005653.

It is an arithmetic number, because the mean of its divisors is an integer number (147357795).

Almost surely, 2^612101601 is an apocalyptic number.

It is an amenable number.

612101601 is a deficient number, since it is larger than the sum of its proper divisors (272045169).

612101601 is a wasteful number, since it uses less digits than its factorization.

612101601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68011295 (or 68011292 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 612101601 is about 24740.6871569890. The cubic root of 612101601 is about 849.0654554620.

Adding to 612101601 its reverse (106101216), we get a palindrome (718202817).

The spelling of 612101601 in words is "six hundred twelve million, one hundred one thousand, six hundred one".