1400566061 has 4 divisors (see below), whose sum is σ = 1406682300. Its totient is φ = 1394449824.

The previous prime is 1400566043. The next prime is 1400566073. The reversal of 1400566061 is 1606650041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1606650041 = 547 ⋅2937203.

It can be written as a sum of positive squares in 2 ways, for example, as 1281210436 + 119355625 = 35794^2 + 10925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400566061 - 2⁶ = 1400565997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400566021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057776 + ... + 3058233.

It is an arithmetic number, because the mean of its divisors is an integer number (351670575).

Almost surely, 2^1400566061 is an apocalyptic number.

It is an amenable number.

1400566061 is a deficient number, since it is larger than the sum of its proper divisors (6116239).

1400566061 is an equidigital number, since it uses as much as digits as its factorization.

1400566061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6116238.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1400566061 is about 37424.1374115690. The cubic root of 1400566061 is about 1118.8396946656.

The spelling of 1400566061 in words is "one billion, four hundred million, five hundred sixty-six thousand, sixty-one".