61764907 has 2 divisors, whose sum is σ = 61764908. Its totient is φ = 61764906.

The previous prime is 61764887. The next prime is 61764929. The reversal of 61764907 is 70946716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61764907 - 2²³ = 53376299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61764907.

It is not a weakly prime, because it can be changed into another prime (61764947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30882453 + 30882454.

It is an arithmetic number, because the mean of its divisors is an integer number (30882454).

Almost surely, 2^61764907 is an apocalyptic number.

61764907 is a deficient number, since it is larger than the sum of its proper divisors (1).

61764907 is an equidigital number, since it uses as much as digits as its factorization.

61764907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 61764907 is about 7859.0652752093. The cubic root of 61764907 is about 395.2882732485.

The spelling of 61764907 in words is "sixty-one million, seven hundred sixty-four thousand, nine hundred seven".