612745670 has 8 divisors (see below), whose sum is σ = 1102942224. Its totient is φ = 245098264.

The previous prime is 612745631. The next prime is 612745699. The reversal of 612745670 is 76547216.

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

It is a super-2 number, since 2×612745670² = 750914512207497800, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30637274 + ... + 30637293.

It is an arithmetic number, because the mean of its divisors is an integer number (137867778).

Almost surely, 2^612745670 is an apocalyptic number.

612745670 is a deficient number, since it is larger than the sum of its proper divisors (490196554).

612745670 is a wasteful number, since it uses less digits than its factorization.

612745670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61274574.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 612745670 is about 24753.7001274557. The cubic root of 612745670 is about 849.3631538857.

The spelling of 612745670 in words is "six hundred twelve million, seven hundred forty-five thousand, six hundred seventy".