612801861 has 8 divisors (see below), whose sum is σ = 933793344. Its totient is φ = 350172480.

The previous prime is 612801859. The next prime is 612801877. The reversal of 612801861 is 168108216.

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

It is not a de Polignac number, because 612801861 - 2¹ = 612801859 is a prime.

It is a super-2 number, since 2×612801861² = 751052241690126642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612801821) 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, 14590500 + ... + 14590541.

It is an arithmetic number, because the mean of its divisors is an integer number (116724168).

Almost surely, 2^612801861 is an apocalyptic number.

It is an amenable number.

612801861 is a deficient number, since it is larger than the sum of its proper divisors (320991483).

612801861 is a wasteful number, since it uses less digits than its factorization.

612801861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29181051.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 612801861 is about 24754.8351034702. The cubic root of 612801861 is about 849.3891163192.

The spelling of 612801861 in words is "six hundred twelve million, eight hundred one thousand, eight hundred sixty-one".