1220370075 has 72 divisors (see below), whose sum is σ = 2377222848. Its totient is φ = 595952640.

The previous prime is 1220370031. The next prime is 1220370077. The reversal of 1220370075 is 5700730221.

1220370075 is a `hidden beast` number, since 1 + 220 + 370 + 0 + 75 = 666.

It is not a de Polignac number, because 1220370075 - 2²² = 1216175771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220370077) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 137214 + ... + 145836.

It is an arithmetic number, because the mean of its divisors is an integer number (33016984).

Almost surely, 2^1220370075 is an apocalyptic number.

1220370075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220370075 is a deficient number, since it is larger than the sum of its proper divisors (1156852773).

1220370075 is a wasteful number, since it uses less digits than its factorization.

1220370075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8693 (or 8685 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 1220370075 is about 34933.7955996768. The cubic root of 1220370075 is about 1068.6377618873.

The spelling of 1220370075 in words is "one billion, two hundred twenty million, three hundred seventy thousand, seventy-five".