140603661 has 32 divisors (see below), whose sum is σ = 228009600. Its totient is φ = 84925440.

The previous prime is 140603657. The next prime is 140603681. The reversal of 140603661 is 166306041.

It is not a de Polignac number, because 140603661 - 2² = 140603657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140603681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114925 + ... + 116141.

It is an arithmetic number, because the mean of its divisors is an integer number (7125300).

Almost surely, 2^140603661 is an apocalyptic number.

140603661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140603661 is a deficient number, since it is larger than the sum of its proper divisors (87405939).

140603661 is a wasteful number, since it uses less digits than its factorization.

140603661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626 (or 1620 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 140603661 is about 11857.6414602568. The cubic root of 140603661 is about 519.9946510791.

The spelling of 140603661 in words is "one hundred forty million, six hundred three thousand, six hundred sixty-one".