61436407 has 2 divisors, whose sum is σ = 61436408. Its totient is φ = 61436406.

The previous prime is 61436399. The next prime is 61436423. The reversal of 61436407 is 70463416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61436407 - 2³ = 61436399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61436467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30718203 + 30718204.

It is an arithmetic number, because the mean of its divisors is an integer number (30718204).

Almost surely, 2^61436407 is an apocalyptic number.

61436407 is a deficient number, since it is larger than the sum of its proper divisors (1).

61436407 is an equidigital number, since it uses as much as digits as its factorization.

61436407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 61436407 is about 7838.1379804135. The cubic root of 61436407 is about 394.5862398159.

The spelling of 61436407 in words is "sixty-one million, four hundred thirty-six thousand, four hundred seven".