61400347 has 2 divisors, whose sum is σ = 61400348. Its totient is φ = 61400346.

The previous prime is 61400333. The next prime is 61400351. The reversal of 61400347 is 74300416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61400347 - 2⁷ = 61400219 is a prime.

It is a super-2 number, since 2×61400347² = 7540005223440818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61400327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30700173 + 30700174.

It is an arithmetic number, because the mean of its divisors is an integer number (30700174).

Almost surely, 2^61400347 is an apocalyptic number.

61400347 is a deficient number, since it is larger than the sum of its proper divisors (1).

61400347 is an equidigital number, since it uses as much as digits as its factorization.

61400347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 61400347 is about 7835.8373515534. The cubic root of 61400347 is about 394.5090241210.

The spelling of 61400347 in words is "sixty-one million, four hundred thousand, three hundred forty-seven".