107650721 has 2 divisors, whose sum is σ = 107650722. Its totient is φ = 107650720.

The previous prime is 107650717. The next prime is 107650733. The reversal of 107650721 is 127056701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96334225 + 11316496 = 9815^2 + 3364^2 .

It is a cyclic number.

It is not a de Polignac number, because 107650721 - 2² = 107650717 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (107655721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53825360 + 53825361.

It is an arithmetic number, because the mean of its divisors is an integer number (53825361).

Almost surely, 2^107650721 is an apocalyptic number.

It is an amenable number.

107650721 is a deficient number, since it is larger than the sum of its proper divisors (1).

107650721 is an equidigital number, since it uses as much as digits as its factorization.

107650721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 107650721 is about 10375.4865428085. The cubic root of 107650721 is about 475.7063853749.

The spelling of 107650721 in words is "one hundred seven million, six hundred fifty thousand, seven hundred twenty-one".