612660061 has 16 divisors (see below), whose sum is σ = 685641600. Its totient is φ = 543549888.

The previous prime is 612660049. The next prime is 612660067. The reversal of 612660061 is 160066216.

It is a cyclic number.

It is not a de Polignac number, because 612660061 - 2⁵ = 612660029 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 (612660067) 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, 82000 + ... + 89158.

It is an arithmetic number, because the mean of its divisors is an integer number (42852600).

Almost surely, 2^612660061 is an apocalyptic number.

It is an amenable number.

612660061 is a deficient number, since it is larger than the sum of its proper divisors (72981539).

612660061 is a wasteful number, since it uses less digits than its factorization.

612660061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7428.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 612660061 is about 24751.9708508232. The cubic root of 612660061 is about 849.3235961374.

The spelling of 612660061 in words is "six hundred twelve million, six hundred sixty thousand, sixty-one".