612157730 has 16 divisors (see below), whose sum is σ = 1103930424. Its totient is φ = 244408320.

The previous prime is 612157729. The next prime is 612157739. The reversal of 612157730 is 37751216.

It can be written as a sum of positive squares in 4 ways, for example, as 392554969 + 219602761 = 19813^2 + 14819^2 .

It is not an unprimeable number, because it can be changed into a prime (612157739) 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, 51167 + ... + 61986.

Almost surely, 2^612157730 is an apocalyptic number.

612157730 is a deficient number, since it is larger than the sum of its proper divisors (491772694).

612157730 is a wasteful number, since it uses less digits than its factorization.

612157730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113701.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 612157730 is about 24741.8214770053. The cubic root of 612157730 is about 849.0914074380.

The spelling of 612157730 in words is "six hundred twelve million, one hundred fifty-seven thousand, seven hundred thirty".