740401646 has 16 divisors (see below), whose sum is σ = 1180824480. Its totient is φ = 346974720.

The previous prime is 740401637. The next prime is 740401687. The reversal of 740401646 is 646104047.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36986 + ... + 53373.

It is an arithmetic number, because the mean of its divisors is an integer number (73801530).

Almost surely, 2^740401646 is an apocalyptic number.

740401646 is a deficient number, since it is larger than the sum of its proper divisors (440422834).

740401646 is a wasteful number, since it uses less digits than its factorization.

740401646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90619.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 740401646 is about 27210.3224163184. The cubic root of 740401646 is about 904.6677844143.

The spelling of 740401646 in words is "seven hundred forty million, four hundred one thousand, six hundred forty-six".