401687970 has 16 divisors (see below), whose sum is σ = 964051200. Its totient is φ = 107116784.

The previous prime is 401687969. The next prime is 401687971. The reversal of 401687970 is 79786104.

It is an interprime number because it is at equal distance from previous prime (401687969) and next prime (401687971).

It is a super-2 number, since 2×401687970² = 322706450485441800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401687971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6694770 + ... + 6694829.

It is an arithmetic number, because the mean of its divisors is an integer number (60253200).

Almost surely, 2^401687970 is an apocalyptic number.

401687970 is an abundant number, since it is smaller than the sum of its proper divisors (562363230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401687970 is a wasteful number, since it uses less digits than its factorization.

401687970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13389609.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 401687970 is about 20042.1548242698. The cubic root of 401687970 is about 737.8412677028.

The spelling of 401687970 in words is "four hundred one million, six hundred eighty-seven thousand, nine hundred seventy".