61992907 has 2 divisors, whose sum is σ = 61992908. Its totient is φ = 61992906.

The previous prime is 61992883. The next prime is 61992913. The reversal of 61992907 is 70929916.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61992907 - 2¹⁵ = 61960139 is a prime.

It is not a weakly prime, because it can be changed into another prime (61992937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30996453 + 30996454.

It is an arithmetic number, because the mean of its divisors is an integer number (30996454).

Almost surely, 2^61992907 is an apocalyptic number.

61992907 is a deficient number, since it is larger than the sum of its proper divisors (1).

61992907 is an equidigital number, since it uses as much as digits as its factorization.

61992907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 61992907 is about 7873.5574551787. The cubic root of 61992907 is about 395.7740672068.

The spelling of 61992907 in words is "sixty-one million, nine hundred ninety-two thousand, nine hundred seven".