140620655 has 16 divisors (see below), whose sum is σ = 193198080. Its totient is φ = 96252192.

The previous prime is 140620639. The next prime is 140620673. The reversal of 140620655 is 556026041.

It is a cyclic number.

It is not a de Polignac number, because 140620655 - 2⁴ = 140620639 is a prime.

It is a super-2 number, since 2×140620655² = 39548337225258050, which contains 22 as substring.

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, 17936 + ... + 24554.

It is an arithmetic number, because the mean of its divisors is an integer number (12074880).

Almost surely, 2^140620655 is an apocalyptic number.

140620655 is a deficient number, since it is larger than the sum of its proper divisors (52577425).

140620655 is an equidigital number, since it uses as much as digits as its factorization.

140620655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7238.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 140620655 is about 11858.3580229305. The cubic root of 140620655 is about 520.0155998772.

Adding to 140620655 its reverse (556026041), we get a palindrome (696646696).

The spelling of 140620655 in words is "one hundred forty million, six hundred twenty thousand, six hundred fifty-five".