1400507065 has 4 divisors (see below), whose sum is σ = 1680608484. Its totient is φ = 1120405648.

The previous prime is 1400507047. The next prime is 1400507071. The reversal of 1400507065 is 5607050041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 887801616 + 512705449 = 29796^2 + 22643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400507065 is a prime.

It is a super-2 number, since 2×1400507065² = 3922840078229828450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140050702 + ... + 140050711.

It is an arithmetic number, because the mean of its divisors is an integer number (420152121).

Almost surely, 2^1400507065 is an apocalyptic number.

It is an amenable number.

1400507065 is a deficient number, since it is larger than the sum of its proper divisors (280101419).

1400507065 is an equidigital number, since it uses as much as digits as its factorization.

1400507065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280101418.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1400507065 is about 37423.3491953887. The cubic root of 1400507065 is about 1118.8239848287.

The spelling of 1400507065 in words is "one billion, four hundred million, five hundred seven thousand, sixty-five".