60661731 has 8 divisors (see below), whose sum is σ = 87104080. Its totient is φ = 37330272.

The previous prime is 60661717. The next prime is 60661751. The reversal of 60661731 is 13716606.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 60661731 - 2¹³ = 60653539 is a prime.

It is a super-2 number, since 2×60661731² = 7359691215832722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60661751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 777676 + ... + 777753.

It is an arithmetic number, because the mean of its divisors is an integer number (10888010).

Almost surely, 2^60661731 is an apocalyptic number.

60661731 is a deficient number, since it is larger than the sum of its proper divisors (26442349).

60661731 is a wasteful number, since it uses less digits than its factorization.

60661731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555445.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 60661731 is about 7788.5641167034. The cubic root of 60661731 is about 392.9207215983.

The spelling of 60661731 in words is "sixty million, six hundred sixty-one thousand, seven hundred thirty-one".