61906951 has 2 divisors, whose sum is σ = 61906952. Its totient is φ = 61906950.

The previous prime is 61906939. The next prime is 61906991. The reversal of 61906951 is 15960916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61906951 - 2¹⁹ = 61382663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61906951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61906991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30953475 + 30953476.

It is an arithmetic number, because the mean of its divisors is an integer number (30953476).

Almost surely, 2^61906951 is an apocalyptic number.

61906951 is a deficient number, since it is larger than the sum of its proper divisors (1).

61906951 is an equidigital number, since it uses as much as digits as its factorization.

61906951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 61906951 is about 7868.0970380391. The cubic root of 61906951 is about 395.5910629863.

The spelling of 61906951 in words is "sixty-one million, nine hundred six thousand, nine hundred fifty-one".