120577665 has 16 divisors (see below), whose sum is σ = 207764928. Its totient is φ = 59361216.

The previous prime is 120577657. The next prime is 120577687. The reversal of 120577665 is 566775021.

It is not a de Polignac number, because 120577665 - 2³ = 120577657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 308979 + ... + 309368.

It is an arithmetic number, because the mean of its divisors is an integer number (12985308).

Almost surely, 2^120577665 is an apocalyptic number.

120577665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120577665 is a deficient number, since it is larger than the sum of its proper divisors (87187263).

120577665 is a wasteful number, since it uses less digits than its factorization.

120577665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618368.

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 120577665 is about 10980.7861740405. The cubic root of 120577665 is about 494.0326173506.

The spelling of 120577665 in words is "one hundred twenty million, five hundred seventy-seven thousand, six hundred sixty-five".