612201667 has 16 divisors (see below), whose sum is σ = 783896832. Its totient is φ = 464145120.

The previous prime is 612201631. The next prime is 612201721. The reversal of 612201667 is 766102216.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 612201667 - 2¹¹ = 612199619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612204667) 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, 104593 + ... + 110290.

It is an arithmetic number, because the mean of its divisors is an integer number (48993552).

Almost surely, 2^612201667 is an apocalyptic number.

612201667 is a deficient number, since it is larger than the sum of its proper divisors (171695165).

612201667 is a wasteful number, since it uses less digits than its factorization.

612201667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214938.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 612201667 is about 24742.7093706409. The cubic root of 612201667 is about 849.1117211768. Note that the first 3 decimals are identical.

The spelling of 612201667 in words is "six hundred twelve million, two hundred one thousand, six hundred sixty-seven".