61761607 has 2 divisors, whose sum is σ = 61761608. Its totient is φ = 61761606.

The previous prime is 61761587. The next prime is 61761611. The reversal of 61761607 is 70616716.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61761607 - 2²³ = 53372999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61761617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30880803 + 30880804.

It is an arithmetic number, because the mean of its divisors is an integer number (30880804).

Almost surely, 2^61761607 is an apocalyptic number.

61761607 is a deficient number, since it is larger than the sum of its proper divisors (1).

61761607 is an equidigital number, since it uses as much as digits as its factorization.

61761607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 61761607 is about 7858.8553237733. The cubic root of 61761607 is about 395.2812332502.

The spelling of 61761607 in words is "sixty-one million, seven hundred sixty-one thousand, six hundred seven".