612161870 has 32 divisors (see below), whose sum is σ = 1143655200. Its totient is φ = 235639936.

The previous prime is 612161863. The next prime is 612161911. The reversal of 612161870 is 78161216.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88601 + ... + 95259.

It is an arithmetic number, because the mean of its divisors is an integer number (35739225).

Almost surely, 2^612161870 is an apocalyptic number.

612161870 is a deficient number, since it is larger than the sum of its proper divisors (531493330).

612161870 is a wasteful number, since it uses less digits than its factorization.

612161870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7012.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 612161870 is about 24741.9051408739. The cubic root of 612161870 is about 849.0933215583.

The spelling of 612161870 in words is "six hundred twelve million, one hundred sixty-one thousand, eight hundred seventy".