7401861 has 10 divisors (see below), whose sum is σ = 11057222. Its totient is φ = 4934520.

The previous prime is 7401841. The next prime is 7401871. The reversal of 7401861 is 1681047.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 352836 = 2655^2 + 594^2 .

It is not a de Polignac number, because 7401861 - 2⁹ = 7401349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7401841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 45610 + ... + 45771.

Almost surely, 2^7401861 is an apocalyptic number.

It is an amenable number.

7401861 is a deficient number, since it is larger than the sum of its proper divisors (3655361).

7401861 is an equidigital number, since it uses as much as digits as its factorization.

7401861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91393 (or 91384 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 7401861 is about 2720.6361388469. The cubic root of 7401861 is about 194.8858503516.

It can be divided in two parts, 740 and 1861, that added together give a square (2601 = 51²).

The spelling of 7401861 in words is "seven million, four hundred one thousand, eight hundred sixty-one".