124620661 has 4 divisors (see below), whose sum is σ = 135949824. Its totient is φ = 113291500.

The previous prime is 124620623. The next prime is 124620697. The reversal of 124620661 is 166026421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124620661 - 2⁷ = 124620533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124620161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5664565 + ... + 5664586.

It is an arithmetic number, because the mean of its divisors is an integer number (33987456).

Almost surely, 2^124620661 is an apocalyptic number.

124620661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124620661 is a deficient number, since it is larger than the sum of its proper divisors (11329163).

124620661 is a wasteful number, since it uses less digits than its factorization.

124620661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11329162.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 124620661 is about 11163.3624414869. The cubic root of 124620661 is about 499.4937021647.

The spelling of 124620661 in words is "one hundred twenty-four million, six hundred twenty thousand, six hundred sixty-one".